ARO-3258: propagate errors of ARO PullSecret controller to ARO operator

[lbossis]

Which issue this PR addresses:

Fixes https://issues.redhat.com/browse/ARO-3258

What this PR does / why we need it:

It is needed to propagate errors of ARO PullSecret controller to ARO operator in order to see those errors at the Operator level and to see all the controller errors in one place.

Test plan for issue:

[x] Unit Test Cases
[x] Local Cluster Creation
[] CI
[] E2E

Are there unit tests

Yes, https://github.com/Azure/ARO-RP/blob/master/pkg/operator/controllers/pullsecret/pullsecret_controller_test.go

How do you know this will function as expected in production?

Running all unit tests locally and verifying tests output

Is there any documentation that needs to be updated for this PR?

N/A

[lbossis]

@microsoft-github-policy-service agree company="Red Hat"

[cadenmarchese]

first pass looks good, just a few suggestions. thanks!

[fahlmant]

lgtm

[tsatam]

Few fixups and additions to our test cases, otherwise LGTM!

[kimorris27]

The changes to the reconciler LGTM, but I agree with Tanmay about the additional case where we can set the controller's Degraded status. I also think we could use some more unit test coverage and went into more detail in an existing comment thread.