Use the same 'app' label for all Deployments in the APB

[david-martin]

By setting the same 'app' label on all Deployments, it will group all of the metrics Deployments into a single 'Application' in the OpenShift Web Console.

Currently, there are multiple Application groups

Suggesting aerogear-metrics as the app label value.
Altenatively, there could be 2 application labels to group 'app metrics' and 'server metrics', however where would Grafana be then?

cc @StevenTobin @darahayes

[StevenTobin]

The keycloak APB groups keycloak and postgres under a Keycloak application so I think grouping everything under aerogear-metrics makes sense, and its going to keep the UI clean when there's a number of other services provisioned.

[david-martin]

@StevenTobin aerogear-metrics sound good to me

[StevenTobin]

PR here: #34