Integrate dashboards into Big Bang

Update the umbrella bigbang chart to be able to configure and enable the dashboards correctly.

Acceptance Criteria

• The dashboards and monitoring should be able to be enabled and disabled in the Big Bang umbrella values
• The dashboard for any given feature should be enabled by default when the chart feature is enabled
• The dashboards should be preconfigured within Grafana
• The datasource / scrape targets should be correctly configured in the Prometheus instance