repo-install-test: move from docker-playground

Prepare the repo-install-test to be extended to cover centos8 as well.
Move the scripts to osmo-ci.git first, so we can mount them as shared
files into the docker containers from here.

Move files without any changes. Integration will be done in a follow-up
commit, so we have a clean git log.

debian-repo-install-test/jenkins.sh
	=> scripts/repo-install-test.sh
debian-repo-install-test/testdata/blacklist.txt
	=> scripts/repo-install-test/blacklist.txt
debian-repo-install-test/testdata/repo-install-test.sh
	=> scripts/repo-install-test/run-inside-docker.sh

Related: OS#4563
Related: If93f37e8d46597a9abc67a4529be9addd65780f5 (docker-playground)
Change-Id: Ia678cc15e66630bd6b75b6c89bc75c1e27afd66c
3 files changed