catch issues with integrations that use oc_map.get()

[arilivigni]

After making the changes for unreachable clusters there are several integrations that end up calling the OC class and specifically oc_map.get() without these fixes, these integrations get stack traces and error.

Amador found some of these issues and I also did some searching to find out all the places this method is used. These incorporate those changes.

Amador also noted that there was an issue with sql-query, but I was unable to reproduce:
I put this in my local app-interface

data/app-interface/sql-queries/app-sre/2020-12-07-dashdotdb-stage-clusters.yml

---
$schema: /app-interface/app-interface-sql-query-1.yml
labels: {}
name: 2020-12-07-dashdotdb-stage-clusters
namespace:
  $ref: /services/dashdot/namespaces/app-sre-stage-01.yml
identifier: dashdotdb-stage
output: stdout
query: |
  SELECT name from cluster;

/etc/hosts
127.0.0.1 api.app-sre-stage-0.k3s7.p1.openshiftapps.com

APP_INTERFACE_STATE_BUCKET_ACCOUNT=app-sre APP_INTERFACE_STATE_BUCKET=app-interface-production qontract-reconcile --config ../config.debug.toml --dry-run --log-level INFO sql-query

Please provide feedback since I am sure some of this can be done better.

[apahim]

Looks mostly good. A couple of fixes and I believe we will be good to go.

[apahim]

lgtm