[REFACTOR] Moved methods for threading to a separate class

"UTILS" is a little bit to generic. Moved the threading to a new class
so the name of the of the class will better reflect its purpose.

Change-Id: Ic33845ed10771b067e5263b06c698ce2dafea98d
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1272
Tested-by: Jenkins CI
Reviewed-by: Stefan Rossbach <srossbach@arcor.de>