feat: Allow to configure 2 gitlab providers simultaneously

[vinokurig]

What does this PR do?

Allow to configure 2 gitlab providers simultaneously

Screenshot/screencast of this PR

What issues does this PR fix or reference?

https://issues.redhat.com/browse/CRW-7142

How to test this PR?

1. Deploy che-server image: quay.io/eclipse/che-server:pr-731
2. Deploy che-operator image: quay.io/ivinokur/che-operator:next
3. Deploy che-dashboard image: quay.io/eclipse/che-dashboard:pr-1237
4. Configure oauth for two gitlab instances, add a random suffix for the second oauth secret name.
5. Start a workspace from each gitlab repository with a devfille.
6. See: personal access token is generated for both gitlab instances.

PR Checklist

As the author of this Pull Request I made sure that:

• The Eclipse Contributor Agreement is valid
• Code produced is complete
• Code builds without errors
• Tests are covering the bugfix
• The repository devfile is up to date and works
• Sections What issues does this PR fix or reference and How to test this PR completed
• Relevant user documentation updated
• Relevant contributing documentation updated
• CI/CD changes implemented, documented and communicated

Release Notes

With this feature it is possible to configure two Gitlab oauth providers simultaneously.

Reviewers

Reviewers, please comment how you tested the PR when approving it.

[tolusha]

Only the first GitLab provider can be revoked.

[vinokurig]

@tolusha

Only the first GitLab provider can be revoked.

Should be fixed by the dashboard pull request fixup.

[artaleks9]

Verified on Eclipse Che with gitlab server and GitLab.com using

quay.io/eclipse/che-server:pr-731
quay.io/ivinokur/che-operator:next
quay.io/eclipse/che-dashboard:pr-1237

The functionality works properly.

---

Verification with two gitlab servers is still in progress.

[artaleks9]

Verification with two gitlab servers is finished.
The functionality also works properly.

See screenshots:

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: artaleks9, tolusha, vinokurig

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[devstudio-release]

Build 3.18 :: server_3.x/367: Console, Changes, Git Data

[devstudio-release]

Build 3.18 :: sync-to-downstream_3.x/7929: Console, Changes, Git Data

[devstudio-release]

Build 3.18 :: get-sources-rhpkg-container-build_3.x/7989: Console, Changes, Git Data

[devstudio-release]

Build 3.18 :: push-latest-container-to-quay_3.x/5010: Console, Changes, Git Data

[devstudio-release]

Build 3.18 :: get-sources-rhpkg-container-build_3.x/7989:

server : 3.x :: Build 65453780 : quay.io/devspaces/server-rhel8:3.18-6
SUCCESS; copied to quay; /DS_CI/push-latest-container-to-quay_3.x/5010 triggered

[devstudio-release]

Build 3.18 :: server_3.x/367:

Upstream sync done; /DS_CI/sync-to-downstream_3.x/7929 triggered

[devstudio-release]

Build 3.18 :: update-digests_3.x/7865: Console, Changes, Git Data

[devstudio-release]

Build 3.18 :: operator-bundle_3.x/3743: Console, Changes, Git Data

[devstudio-release]

Build 3.18 :: sync-to-downstream_3.x/7931: Console, Changes, Git Data

[devstudio-release]

Build 3.18 :: get-sources-rhpkg-container-build_3.x/7991: Console, Changes, Git Data

[devstudio-release]

Build 3.18 :: get-sources-rhpkg-container-build_3.x/7991:

devspaces-operator-bundle : 3.x :: Failed in 65455836 : BREW:BUILD/STATUS:UNKNOWN
FAILURE:; copied to quay