BUGFIX : replacement of os.getlogin() with getpass.getuser(),
more robust (os.getlogin() wasn't working with some terminal
multiplexers)
Removed couple of unused options from config; cleanup of the example gonfig files
Merge branch 'u/salnikov/DM-1055'
BUGFIX : CSS configuration enabled (i.e. ~/.my.cnf creation, used by watcher)
BUGFIX : paths to params file in qserv-admin.py tests are now corrects