Fix cop offenses for Style/HashTransformation in app directory

Karthik Sivadasrequested to merge
karthik.sivadas/gitlab:pl-rubocop-style-hashtransformation-app-directory into master

What does this MR do?

Fix cop offenses for Style/HashTransformation in app directory.

Related issues

Contributes to #322739 (closed)

Edited by Peter Leitzen

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