jobs/osmocom-release-tarballs: move to dp

Move the long shell command into a jenkins.sh in docker-playground, and
move the osmocom-release-tarballs.sh script there as well. This makes it
easier to test the script, and only patching one repository is needed
from now on when changing to a newer debian version.

Depends: docker-playground I4cf66097f508c029f688ec8af1cab2238d42f84f
Change-Id: I15f6c08b807f1462f91e95b624cdc1aad0592dd6
2 files changed