Remove DefaultConfigOverwrite from CRD

[fmount]

As done in Cinder via [1], this patch removes the DefaultConfigOverwrite parameter from the CRD.
The feature was never fully implemented, and it's superseded by the ExtraMounts feature.

[1] openstack-k8s-operators/cinder-operator#297

[openshift-ci]

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[gouthampacha]

/retest

[fmount]

/test manila-operator-build-deploy-tempest

[abays]

+1 from me if we've decided to do this across-the-board for all operators

[gouthampacha]

+1 from me if we've decided to do this across-the-board for all operators

+1 from me as well; the discussion elsewhere seemed to indicate a split between wanting this over extraMounts in some other operators - because they have a specific use case that we don't have in cinder/manila/glance operators. We support extraMounts for a range of purposes already, having this is a small overlap/duplication, we could document this disparity and merge?

[fmount]

+1 from me if we've decided to do this across-the-board for all operators

+1 from me as well; the discussion elsewhere seemed to indicate a split between wanting this over extraMounts in some other operators - because they have a specific use case that we don't have in cinder/manila/glance operators. We support extraMounts for a range of purposes already, having this is a small overlap/duplication, we could document this disparity and merge?

+1, we could as a follow up of openstack-k8s-operators/dev-docs#31 where we collected the general method of providing config to the services

[gouthampacha]

/lgtm

This was removed in the cinder-operator via: openstack-k8s-operators/cinder-operator#297