Add a CR field to choose between upstream & downstream images

[david-martin]

Add a field to the ApplicationMonitoring CRD to allow choosing between upstream & downstream images. The default for this field should be to use upstream images.

This will allow the operator to be used out of the box without having to setup any pull secrets or linking them to serviceaccounts.

Changes:

• Add a new useProtectedRHImages boolean field to the ApplicationMonitoring CRD, defaults to false
• All images should be made configurable within the operator, and toggled based on the value of this new field
• If a protected image is not being used currently, a public upstream image is fine.
• Versions of things between RH and upstream images should match as closely as possible

These changes should lower the priority of #52, #58, #59

[david-martin]

Closing as we don't do this.

65 has changes to switch to public images.

Use of private images will happen in a separate fork rather than in this repo