feat: manage grafana pgsql db

- add pgsql backend capabilities for grafana
- create/manage pgsql database for grafana
- fix psql_is_slave fact to work on all current patroni clusters
- fix extra } in resources
- fix unless in psql grant commands
- fix add database owner
- fix disabled schema permissions, the unless didnt work

hieradata/roles/infra/metrics/grafana.eyaml

@@ -0,0 +1,2 @@
+---
+profiles::sql::postgresdb::dbpass: ENC[PKCS7,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]

hieradata/roles/infra/metrics/grafana.yaml

@@ -2,8 +2,15 @@
 hiera_include:
   - profiles::nginx::simpleproxy
 
-profiles::metrics::grafana::mysql_host: "mariadb-%{facts.environment}.service.%{facts.country}-%{facts.region}.consul"
-profiles::metrics::grafana::mysql_port: 3306
+profiles::sql::postgresdb::cluster_name: "patroni-shared-%{facts.environment}"
+profiles::sql::postgresdb::dbname: grafana
+profiles::sql::postgresdb::dbuser: grafana
+profiles::metrics::grafana::db_host: "master.%{hiera('profiles::sql::postgresdb::cluster_name')}.service.%{facts.country}-%{facts.region}.consul"
+profiles::metrics::grafana::db_port: 5432
+profiles::metrics::grafana::db_name: "%{hiera('profiles::sql::postgresdb::dbname')}"
+profiles::metrics::grafana::db_user: "%{hiera('profiles::sql::postgresdb::dbuser')}"
+profiles::metrics::grafana::db_pass: "%{hiera('profiles::sql::postgresdb::dbpass')}"
+profiles::metrics::grafana::pgsql_backend: true
 
 # additional altnames
 profiles::pki::vault::alt_names: