This change converts existing datafile-rebase job [1] to jjb.
The actual rebase job is put in global templates which can be
used by any other ONAP project we have in same way as datafile
uses it.
[1] https://jenkins.nordix.org/view/ONAP/job/dcaegen2-collectors-datafile-rebase-master/
Change-Id: I9784500b9ff22d2ef8d8d63bcc7b90a900401fcf
Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>