WIP initialized pillarenv to base if it is none

[sanket925]

What does this PR do?

What issues does this PR fix or reference?

Fixes

Previous Behavior

Remove this section if not relevant

New Behavior

Remove this section if not relevant

Merge requirements satisfied?

[NOTICE] Bug fixes or features added to Salt require tests.

• Docs
• Changelog - https://docs.saltproject.io/en/master/topics/development/changelog.html
• Tests written/updated

Commits signed with GPG?

Yes/No

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