Added Prometheus monitoring and enabled metrics collection for dependencies

Changes:
- Enabled `/metrics` endpoint for metrics collection in couchdb, redis, postgis, Nginx, Grafana, cert-manager
- Updated redis charts with latest version
- Added servicemonitor for service discovery in grafana and kube-state-metrics for prometheus
- Added node-exporter and couchdb exporter for getting metrics about host machine and couchdb pod
- Added Prometheus with Prometheus Alertmanager, Prometheus Operator and Prometheus Server

Test:
- All UT's and Cypress tests passed