Allow controller to watch multiple ingress classes

[rkt2spc]

Usage:

# Deployments
...
spec:
  containers:
  ...
  - name: pomerium
    image: pomerium/pomerium-operator:v0.0.1-rc1
    args:
    ...
    - --ingress-class='/(nginx|pomerium)/'
    - --service-class='/(pomerium|nginx-.+)/'
    ...
  ...

[codecov]

Codecov Report

Merging #40 (a1a5847) into master (7618bea) will decrease coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #40      +/-   ##
==========================================
- Coverage   72.72%   72.63%   -0.10%     
==========================================
  Files           7        7              
  Lines         396      402       +6     
==========================================
+ Hits          288      292       +4     
- Misses         77       79       +2     
  Partials       31       31              

Impacted Files	Coverage Δ
internal/controller/reconciler.go	79.62% <100.00%> (+2.54%)	⬆️
internal/configmanager/configmanager.go	83.33% <0.00%> (-2.39%)	⬇️

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[desimone]

@rocketspacer Thank you for the PR! LGTM

[travisgroth]

Thanks so much for the PR. Two comments - one minor and one maybe a little larger in scope. I don't think either needs much in the way of test changes though. Thanks for the thorough attention on the testing front!

[CLAassistant]

All committers have signed the CLA.

[rkt2spc]

@travisgroth I just rebased and updated the code according to our conversation. Please check again 🙏 Sorry for the long delay.

[travisgroth]

LGTM 👍

[rkt2spc]

@travisgroth when do you plan to release this?

[travisgroth]

@rocketspacer Actually, today!