refactor(operator): use a common label (jivaAPI) to reference jiva api

[abhisheksinghbaghel]

resolves #169

Signed-off-by: Abhishek Singh Baghel abhib@microsoft.com

Why is this PR required? What issue does it fix?:
_Fixes #169

What this PR does?:
Updates code base to use jivaAPI as a common label to reference "github.com/openebs/jiva-operator/pkg/apis/openebs/v1"

Does this PR require any upgrade changes?:
No

If the changes in this PR are manually verified, list down the scenarios covered::

Any additional information for your reviewer? :
Mention if this PR is part of any design or a continuation of previous PRs

Checklist:

• PR Title follows the convention of <type>(<scope>): <subject>.
• Has the change log section been updated?
• Commit has unit tests
• Commit has integration tests
• (Optional) Does this PR change require updating Helm Chart? If yes, mention the Helm Chart PR #
• (Optional) Are upgrade changes included in this PR? If not, mention the issue/PR to track:
• (Optional) If documentation changes are required, which issue https://github.com/openebs/website is used to track them:

[shubham14bajpai]

Hi @abhisheksinghbaghel Thank you for the PR. Just a few nit comments

[shubham14bajpai]

LGTM