add default_theme parameter passing to grafana.ini (closes #394)

[kandeshvari]

Description

Relevant issues/tickets

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist

• This change requires a documentation update
• I have added tests that prove my fix is effective or that my feature works
• I have added a test case that will be used to verify my changes
• Verified independently on a cluster by reviewer

Verification steps

[openshift-ci-robot]

Hi @kandeshvari. Thanks for your PR.

I'm waiting for a integr8ly 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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[hubeadmin]

/lgtm

/approve

Thanks for contributing, changes work as expected 👍

[openshift-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: HubertStefanski

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files:

• OWNERS [HubertStefanski]

Approvers can indicate their approval by writing /approve in a comment
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[openshift-ci]

@kandeshvari: The following tests failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
ci/prow/images	2d10704	link	/test images
ci/prow/unit	2d10704	link	/test unit
ci/prow/e2e	2d10704	link	/test e2e
ci/prow/format	2d10704	link	/test format

Full PR test history. Your PR dashboard.

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. I understand the commands that are listed here.

[hubeadmin]

overriding CI again