pgAdmin 4 commit: PEP8 fixes. Fixes #3156

PEP8 fixes. Fixes #3156

Branch
------
master

Details
-------
https://git.postgresql.org/gitweb?p=pgadmin4.git;a=commitdiff;h=cca6504d54e2cac81c6be0d1e43138fa5c7e98a8
Author: Murtuza Zabuawala <murtuza.zabuawala@enterprisedb.com>

Modified Files
--------------
.../servers/resource_groups/__init__.py            | 196 ++++++++++++++-------
.../tests/test_resource_groups_delete.py           |   4 +-
.../tests/tests_resource_groups_get.py             |   2 +-
.../server_groups/servers/roles/__init__.py        | 141 +++++++++------
.../servers/roles/tests/test_role_add.py           |   9 +-
.../servers/roles/tests/test_role_delete.py        |   1 -
.../servers/roles/tests/test_role_put.py           |   1 -
.../server_groups/servers/tablespaces/__init__.py  |  55 ++++--
.../tablespaces/tests/test_backend_supported.py    |   1 +
.../servers/tablespaces/tests/test_tbspc_add.py    |   6 +-
.../servers/tablespaces/tests/test_tbspc_delete.py |  18 +-
.../servers/tablespaces/tests/test_tbspc_put.py    |  10 +-
12 files changed, 290 insertions(+), 154 deletions(-)