[CPDEV-101357] Remove PSP and master role support

[ilia1243]

Description

• Remove Kubernetes v1.23, v1.24 and all related code.
• Remove PSP support and all related code.
• No longer support master role.
  • Support of this role was preserved for do procedure.

Fixes #55

Breaking changes

• master is not supported neither in nodes.roles nor in other sections that refer to roles, e.g thirdparties.group.
• Checks of master role existence in jinja templates will no longer work, e. g. {{ nodes | select("has_role", "master") | list }}

Checklist

• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Integration CI passed
• Unit tests. If Yes list of new/changed tests with brief description
• There is no merge conflicts

Unit tests

test_do.py - cover support of master role for do procedure.

[n549]

Probably it's worth to remove Service Account Issuer description from IN? This FeatureGate was removed in v1.23.

[ilia1243]

Probably it's worth to remove Service Account Issuer description from IN? This FeatureGate was removed in v1.23.

Only remove the feature-gates: "ServiceAccountIssuerDiscovery=true" or the whole description? As far as I see, related flags are still available https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/.

[n549]

Only remove the feature-gates: "ServiceAccountIssuerDiscovery=true" or the whole description? As far as I see, related flags are still available https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/.

yes, remove the feature-gates: "ServiceAccountIssuerDiscovery=true". And Service Account Issuer feature is supported only on Kubernetes 1.20. warning is not needed any more.

[ilia1243]

Only remove the feature-gates: "ServiceAccountIssuerDiscovery=true" or the whole description? As far as I see, related flags are still available https://kubernetes.io/docs/reference/command-line-tools-reference/kube-apiserver/.

yes, remove the feature-gates: "ServiceAccountIssuerDiscovery=true". And Service Account Issuer feature is supported only on Kubernetes 1.20. warning is not needed any more.

It is necessary to repeat the steps and make sure it is still working. Also there are few other guides that require actualization. Created issue #666