Fix: Configmap and Secret Duplicate Key issue

[vikramdevtron]

Description

Fixed ConfigMap and secret override duplicate key issues by overriding existing entry for app and environment. if correct data available in payload.

Fixes # (issue): #2024

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)
• This change requires a documentation update

How Has This Been Tested?

• Secret Create/Update On Environment Specific
• Config Map Create/Update on Environment Specific

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have tested it for all user roles
• I have added all the required unit/api test cases