Fix QA, allow switching compiler versions, fix google test compilation error. (#348)

* allow selecting compiler version

* fix typo

* add Wno-deprecated flag for google tests

* change git repo, fix qa log files names

* change the git clone syntax

* use Omkar's git credentials

* try to use jenkins as git user

* try using illsilin username for gerrit repo with ssh key

* try new gerrit authorization

* change ssh key syntax

* try another way of passing ssh key to docker

* add mount ssh in dockerfile

* create .ssh folder

* move ssh-keyscan to later

* get rid of npm call

* build first docker image on master

* check the contents of the .ssh folder

* try replacing omkars creds with gerrit creds

* use open repo, clean up changes

* get rid of ssh default argument

cmake/googletest.cmake

@@ -20,6 +20,7 @@ list(APPEND GTEST_CMAKE_CXX_FLAGS
      -Wno-unused-member-function
      -Wno-comma
      -Wno-old-style-cast
+     -Wno-deprecated
 )
 message(STATUS "Suppressing googltest warnings with flags: ${GTEST_CMAKE_CXX_FLAGS}")