Refactoring of kubernetes informers and local caches

[aledbf]

No description provided.

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these OWNERS Files:

• OWNERS [aledbf]

You can indicate your approval by writing /approve in a comment
You can cancel your approval by writing /approve cancel in a comment

[k8s-reviewable]

This change is 

[coveralls]

Coverage increased (+2.8%) to 39.587% when pulling c5df325 on aledbf:stores into 8975800 on kubernetes:master.

[coveralls]

Coverage increased (+2.8%) to 39.567% when pulling 4fe8fc2 on aledbf:stores into 8975800 on kubernetes:master.

[coveralls]

Coverage increased (+2.9%) to 39.604% when pulling 4fe8fc2 on aledbf:stores into 8975800 on kubernetes:master.

[coveralls]

Coverage increased (+2.7%) to 39.5% when pulling 0287024 on aledbf:stores into 8975800 on kubernetes:master.

[coveralls]

Changes Unknown when pulling 9af683b on aledbf:stores into ** on kubernetes:master**.