CP-6167: Pylint changes for creedence.

Signed-off-by: Zheng Li <zheng.li@citrix.com>
Reviewed-by: Vineeth Thampi Raveendran <vineeth.thampi@citrix.com>

Signed-off-by: Siddharth Vinothkumar <siddharth.vinothkumar@citrix.com>