doc: add OWNERS and redhat/ directory

These OWNERS files are needed for the openshift-ci bot to allow members
of the Ceph-CSI team to approve PRs and merge them automatically.

The redhat/ directory contains a README.md with details about the
downstream procedures. A Container file has been added as well, which
will allow running builds on the OpenShift CI for the PRs that are
created.

Signed-off-by: Niels de Vos <ndevos@redhat.com>

.github/PULL_REQUEST_TEMPLATE/redhat-backport.md

@@ -0,0 +1,14 @@
+**You must EDIT ME! The contents below is an example only.**
+
+Bug 000000 gets hit when the system is out for its birthday party. After
+providing the system with sufficient cake, it returns to normal business the
+next day.
+
+I hereby confirm that:
+
+- [ ] this change is in the upstream project (*reference?*)
+- [ ] this change is in the devel branch of this project
+- [ ] branches for higher versions of the project have this change merged
+- [ ] this PR is not *downstream-only*, if that was the case, I would have
+  explained its need very clearly
+

.github/PULL_REQUEST_TEMPLATE/redhat-downstream-only.md

@@ -0,0 +1,5 @@
+**You must EDIT ME! The contents below is an example only.**
+
+The downstream CI testing depends on additional settings in the Search
+Optimization so that the project contributors can get a piece of chocolate for
+every merged PR.

.github/PULL_REQUEST_TEMPLATE/redhat-sync.md

@@ -0,0 +1,9 @@
+**You must EDIT ME! The contents below is an example only.**
+
+Sync the upstream changes from `ceph/ceph-csi:devel` into the `devel` branch.
+The most important recent changes that we want included are:
+
+- the new foz bar baz works flawlessly
+- this addresses a bug where users are facing issues with XYZ
+- ...
+