Keeping the current active project/namespace when re-logging in

[mcouliba]

/kind bug

What does does this PR do / why we need it:

The command odo login overwrites the current active project/namespace even if a current context is already defined.

Which issue(s) this PR fixes:

#4387

PR acceptance criteria:

• Unit test

• Integration test

• Documentation

• I have read the test guidelines

How to test changes / Special notes to the reviewer:

To reproduce the bug:

odo login
odo project create my-project
odo project get --> result: 'my-project'
odo login
odo project get --> result should be 'my-project'

[openshift-ci-robot]

Hi @mcouliba. Thanks for your PR.

I'm waiting for a openshift member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[mik-dass]

/ok-to-test

[dharmit]

/approve
/lgtm

@mcouliba thanks for your contribution.

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dharmit, mcouliba

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