pgAdmin 4 commit: Fixed following SonarQube issues: - Mailing list pgadmin-hackers

Fixed following SonarQube issues:
 1. String literals should not be duplicated.
 2. Cognitive Complexity of functions should not be too high.

Branch
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master

Details
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https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=0668a52c6bbc919c33575ebeb3e47dd71ffcb6e6
Author: Yogesh Mahajan <yogesh.mahajan@enterprisedb.com>

Modified Files
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.../pg_utilities_backup_restore_test.py            | 129 ++++----
web/regression/feature_utils/pgadmin_page.py       | 324 ++++++++++++---------
web/regression/runtests.py                         | 118 +++++---
3 files changed, 330 insertions(+), 241 deletions(-)