Support for ignore rules in 'convertObjectPropsToCamelCase' helper

What does this MR do?

This MR enhances convertObjectPropsToCamelCase within app/assets/javascripts/lib/utils/common_utils.js to accept two additional params within options param;

• dropKeys: An array of strings which can contain property names that you want to discard while creating new object with converted property names.
• allowKeys: An array of strings which can contain property names that you want to leave untouched (i.e. keep in snake_case) while creating new object with converted property names.

Does this MR meet the acceptance criteria?

• Tests added for this feature/bug
• Tested in all supported browsers
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.
• Security reports checked/validated by reviewer