Now that we no longer support py27, we can use the standard library
unittest.mock module instead of the third party mock lib.
Change-Id: I6245a207ec65df0ef11a798b4cffe3157abccb73
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>
Co-Authored-By: Spyros Trigazis <spyridon.trigazis@cern.ch>