Rename `_database_hostname` to `_postgres_hostname`

Should have been done during 2a99e84b5b, but I've missed it.

Because of this, 9bf8ce878e was also incomplete and would have caused
an error.

group_vars/matrix_servers

@@ -958,12 +958,12 @@ matrix_postgres_additional_databases: |
       'name': matrix_appservice_slack_postgres_db_name,
       'username': matrix_appservice_slack_postgres_username,
       'password': matrix_appservice_slack_postgres_password,
-    }] if (matrix_appservice_slack_enabled and matrix_appservice_slack_database_engine == 'postgres' and matrix_appservice_slack_database_hostname == 'matrix-postgres') else [])
+    }] if (matrix_appservice_slack_enabled and matrix_appservice_slack_database_engine == 'postgres' and matrix_appservice_slack_postgres_hostname == 'matrix-postgres') else [])
     + ([{
       'name': matrix_appservice_irc_postgres_db_name,
       'username': matrix_appservice_irc_postgres_username,
       'password': matrix_appservice_irc_postgres_password,
-    }] if (matrix_appservice_irc_enabled and matrix_appservice_irc_database_engine == 'postgres' and matrix_appservice_irc_database_hostname == 'matrix-postgres') else [])
+    }] if (matrix_appservice_irc_enabled and matrix_appservice_irc_database_engine == 'postgres' and matrix_appservice_irc_postgres_hostname == 'matrix-postgres') else [])
     + ([{
       'name': matrix_mautrix_facebook_postgres_db_name,
       'username': matrix_mautrix_facebook_postgres_username,
@@ -973,17 +973,17 @@ matrix_postgres_additional_databases: |
       'name': matrix_mautrix_hangouts_postgres_db_name,
       'username': matrix_mautrix_hangouts_postgres_username,
       'password': matrix_mautrix_hangouts_postgres_password,
-    }] if (matrix_mautrix_hangouts_enabled and matrix_mautrix_hangouts_database_engine == 'postgres' and matrix_mautrix_hangouts_database_hostname == 'matrix-postgres') else [])
+    }] if (matrix_mautrix_hangouts_enabled and matrix_mautrix_hangouts_database_engine == 'postgres' and matrix_mautrix_hangouts_postgres_hostname == 'matrix-postgres') else [])
     + ([{
       'name': matrix_mautrix_telegram_postgres_db_name,
       'username': matrix_mautrix_telegram_postgres_username,
       'password': matrix_mautrix_telegram_postgres_password,
-    }] if (matrix_mautrix_telegram_enabled and matrix_mautrix_telegram_database_engine == 'postgres' and matrix_telegram_facebook_database_hostname == 'matrix-postgres') else [])
+    }] if (matrix_mautrix_telegram_enabled and matrix_mautrix_telegram_database_engine == 'postgres' and matrix_telegram_facebook_postgres_hostname == 'matrix-postgres') else [])
     + ([{
       'name': matrix_mautrix_whatsapp_postgres_db_name,
       'username': matrix_mautrix_whatsapp_postgres_username,
       'password': matrix_mautrix_whatsapp_postgres_password,
-    }] if (matrix_mautrix_whatsapp_enabled and matrix_mautrix_whatsapp_database_engine == 'postgres' and matrix_mautrix_whatsapp_database_hostname == 'matrix-postgres') else [])
+    }] if (matrix_mautrix_whatsapp_enabled and matrix_mautrix_whatsapp_database_engine == 'postgres' and matrix_mautrix_whatsapp_postgres_hostname == 'matrix-postgres') else [])
     + ([{
       'name': 'matrix_bridge_sms',
       'username': 'matrix_bridge_sms',
@@ -993,45 +993,45 @@ matrix_postgres_additional_databases: |
       'name': matrix_mx_puppet_skype_postgres_db_name,
       'username': matrix_mx_puppet_skype_postgres_username,
       'password': matrix_mx_puppet_skype_postgres_password,
-    }] if (matrix_mx_puppet_skype_enabled and matrix_mx_puppet_skype_database_engine == 'postgres' and matrix_mx_puppet_skype_database_hostname == 'matrix-postgres') else [])
+    }] if (matrix_mx_puppet_skype_enabled and matrix_mx_puppet_skype_database_engine == 'postgres' and matrix_mx_puppet_skype_postgres_hostname == 'matrix-postgres') else [])
     + ([{
       'name': matrix_mx_puppet_slack_postgres_db_name,
       'username': matrix_mx_puppet_slack_postgres_username,
       'password': matrix_mx_puppet_slack_postgres_password,
-    }] if (matrix_mx_puppet_slack_enabled and matrix_mx_puppet_slack_database_engine == 'postgres' and matrix_mx_puppet_slack_database_hostname == 'matrix-postgres') else [])
+    }] if (matrix_mx_puppet_slack_enabled and matrix_mx_puppet_slack_database_engine == 'postgres' and matrix_mx_puppet_slack_postgres_hostname == 'matrix-postgres') else [])
      + ([{
       'name': matrix_mx_puppet_twitter_postgres_db_name,
       'username': matrix_mx_puppet_twitter_postgres_username,
       'password': matrix_mx_puppet_twitter_postgres_password,
-    }] if (matrix_mx_puppet_twitter_enabled and matrix_mx_puppet_twitter_database_engine == 'postgres' and matrix_mx_puppet_twitter_database_hostname == 'matrix-postgres') else [])
+    }] if (matrix_mx_puppet_twitter_enabled and matrix_mx_puppet_twitter_database_engine == 'postgres' and matrix_mx_puppet_twitter_postgres_hostname == 'matrix-postgres') else [])
      + ([{
       'name': matrix_mx_puppet_instagram_postgres_db_name,
       'username': matrix_mx_puppet_instagram_postgres_username,
       'password': matrix_mx_puppet_instagram_postgres_password,
     }] if (matrix_mx_puppet_instagram_enabled
            and matrix_mx_puppet_instagram_database_engine == 'postgres'
-           and matrix_mx_puppet_instagram_database_hostname == 'matrix-postgres') else [])
+           and matrix_mx_puppet_instagram_postgres_hostname == 'matrix-postgres') else [])
      + ([{
       'name': matrix_mx_puppet_discord_postgres_db_name,
       'username': matrix_mx_puppet_discord_postgres_username,
       'password': matrix_mx_puppet_discord_postgres_password,
     }] if (matrix_mx_puppet_discord_enabled
            and matrix_mx_puppet_discord_database_engine == 'postgres'
-           and matrix_mx_puppet_discord_database_hostname == 'matrix-postgres') else [])
+           and matrix_mx_puppet_discord_postgres_hostname == 'matrix-postgres') else [])
      + ([{
       'name': matrix_mx_puppet_steam_postgres_db_name,
       'username': matrix_mx_puppet_steam_postgres_username,
       'password': matrix_mx_puppet_steam_postgres_password,
     }] if (matrix_mx_puppet_steam_enabled
            and matrix_mx_puppet_steam_database_engine == 'postgres'
-           and matrix_mx_puppet_steam_database_hostname == 'matrix-postgres') else [])
+           and matrix_mx_puppet_steam_postgres_hostname == 'matrix-postgres') else [])
      + ([{
       'name': matrix_dimension_postgres_db_name,
       'username': matrix_dimension_postgres_username,
       'password': matrix_dimension_postgres_password,
     }] if (matrix_dimension_enabled
            and matrix_dimension_database_engine == 'postgres'
-           and matrix_dimension_database_hostname == 'matrix-postgres') else [])
+           and matrix_dimension_postgres_hostname == 'matrix-postgres') else [])
    }}
 
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