add observed generation to operator v1

[deads2k]

We need to know when we have observed a particular generation of configuration.

[abhinavdahiya]

I see this type was added in 8453618 . Was it a conscious decision to not included this field in 8453618 and something has changes since that we now need this or this was always needed and we just missed it in #125 :P

Also i see that https://github.com/kubernetes/api/blob/master/apps/v1/types.go#L565 has //+optional when omitempty. Is that useful here?

[deads2k]

I see this type was added in 8453618 . Was it a conscious decision to not included this field in 8453618 and something has changes since that we now need this or this was always needed and we just missed it in #125 :P

Also i see that https://github.com/kubernetes/api/blob/master/apps/v1/types.go#L565 has //+optional when omitempty. Is that useful here?

I just missed it.

The optional tag is a directive to openapi generation. Most of our types don't use it consistently, but I can add it.

[sttts]

/lgtm

[openshift-ci-robot]

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