Configuration of FederatedIdentityCredential

[theunrepentantgeek]

What this PR does / why we need it:

Allows the issuer and subject properties of FederatedIdentityCredential to be set from configMaps.

Closes #3030

How does this PR make you feel:

[codecov-commenter]

Codecov Report

Merging #3125 (1646a3a) into main (d505950) will decrease coverage by 0.05%.
The diff coverage is 38.40%.

@@            Coverage Diff             @@
##             main    #3125      +/-   ##
==========================================
- Coverage   54.24%   54.19%   -0.05%     
==========================================
  Files        1418     1418              
  Lines      609010   603516    -5494     
==========================================
- Hits       330350   327104    -3246     
+ Misses     224537   222911    -1626     
+ Partials    54123    53501     -622     

Impacted Files	Coverage Δ
...ederated_identity_credential_spec_arm_types_gen.go	33.33% <ø> (ø)
...storage/federated_identity_credential_types_gen.go	55.17% <ø> (-0.39%)	⬇️
...ederated_identity_credential_spec_arm_types_gen.go	33.33% <ø> (ø)
...storage/federated_identity_credential_types_gen.go	40.50% <20.00%> (-3.22%)	⬇️
...preview/federated_identity_credential_types_gen.go	50.00% <25.00%> (-5.36%)	⬇️
...preview/federated_identity_credential_types_gen.go	52.66% <31.81%> (-4.43%)	⬇️
...2/internal/controllers/controller_resources_gen.go	85.60% <80.00%> (-0.10%)	⬇️

... and 152 files with indirect coverage changes