Updates to spec.image on existing Infinispan CR have no effect

[ryanemerson]

Fixes #1223

[Crumby]

@ryanemerson Have you tried going from a custom image back to a newer version (remove spec.image and use newer version)

[ryanemerson]

Have you tried going from a custom image back to a newer version (remove spec.image and use newer version)

@Crumby Good catch. I updated the test to include this scenario and the initial fix didn't work. In order to handle this scenario, it was necessary to add an additional ".status.operand.customImage" field.