chore: add additional OIDC auth resolvers

[JessicaJHee]

Description

Adds the oidcSubClaimMatchingKeycloakUserId and oidcSubClaimMatchingPingIdentityUserId resolvers that resolve based on the more secure, sub claim from OIDC.

Which issue(s) does this PR fix

• Fixes RHIDP-4798

PR acceptance criteria

Please make sure that the following steps are complete:

• GitHub Actions are completed and successful
• Unit Tests are updated and passing
• E2E Tests are updated and passing
• Documentation is updated if necessary (requirement for new features)
• Add a screenshot if the change is UX/UI related

[github-actions]

The image is available at:

• quay.io/janus-idp/backstage-showcase:pr-2020 or
• quay.io/janus-idp/backstage-showcase:pr-2020-05bf0be9

[github-actions]

The image is available at:

• quay.io/janus-idp/backstage-showcase:pr-2020 or
• quay.io/janus-idp/backstage-showcase:pr-2020-7a6a3774

[kim-tsao]

This is for 1.5 only. DO NOT BACKPORT

[JessicaJHee]

@kim-tsao I found this recommendation in the OIDC specs while looking into the userinfo response:

"Due to the possibility of token substitution attacks (see Section 16.11), the UserInfo Response is not guaranteed to be about the End-User identified by the sub (subject) element of the ID Token. The sub Claim in the UserInfo Response MUST be verified to exactly match the sub Claim in the ID Token; if they do not match, the UserInfo Response values MUST NOT be used."

I've added a check to satisfy this requirement in this PR as well 👍

[github-actions]

The image is available at:

• quay.io/janus-idp/backstage-showcase:pr-2020 or
• quay.io/janus-idp/backstage-showcase:pr-2020-af67218e

[github-actions]

The image is available at:

• quay.io/janus-idp/backstage-showcase:pr-2020 or
• quay.io/janus-idp/backstage-showcase:pr-2020-c51b5cde

[github-actions]

The image is available at:

• quay.io/janus-idp/backstage-showcase:pr-2020 or
• quay.io/janus-idp/backstage-showcase:pr-2020-b9dba8e2

[kim-tsao]

/lgtm
/approve

[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kim-tsao

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[kim-tsao]

/retest

[openshift-ci]

@JessicaJHee: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/e2e-tests	b9dba8e	link	true	/test e2e-tests

Full PR test history. Your PR dashboard.

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[JessicaJHee]

/retest