Container Scanning, Dependency Scanning, License Management
and SAST parts of Auto DevOps now use the preexisting templates.

Auto DevOps and the DAST job template will now use a
shared job template instead of maintaining two copies
of the job. This also allows Auto DevOps to use custom
authentication with DAST.

closes https://gitlab.com/gitlab-org/gitlab-ee/issues/6636
closes https://gitlab.com/gitlab-org/gitlab-ee/issues/5763

Signed-off-by: NTakuya Noguchi <takninnovationresearch@gmail.com>

Update Dependency Scanning and add other templates