CORE-5282: Added the Git-Ref: field to the --version output.
CORE-5281: Added the Git-Ref field for the --version output in conrad.
CORE-5278: Added the Git-Ref field for the --version output for the JEX.
CORE-5278: Added the Git-Ref field to the --version option in Donkey
CORE-5280: Added the Git-Ref field to the --version option in metadactyl.
CORE-5938: generate notifications for canceled jobs