Revert enforcing image value on containers using s2i
Enforcing image on every reconcile is not desired for s2i sites because, the image field value will be resolved from the tag name to SHA value by openshift. This in turn causes indefinite rollouts.
Ex: image-registry.openshift-image-registry.svc:5000/admin-eguide/sitebuilder-s2i-admin-eguide-s2i-test:v9.2-1-RELEASE-XYZ
will be resolved to
image-registry.openshift-image-registry.svc:5000/admin-eguide/sitebuilder-s2i-admin-eguide-s2i-test@sha256:b6528c1e5221d5a880bc17a1664876836b64c812e7968f8cf18
Partial https://gitlab.cern.ch/webservices/webframeworks-planning/-/issues/585