Add volumesnapshots and csi-hostpath-driver to regional-dr

With these addons we can deploy busybox using `csi-hostpath-sc` storage
class and ramen will setup replication using volsync and submariner.

Testing with basic-test::
- deploy works
- undeploy works
- failover partly works, moving the application to the destination
  cluster, but clean up never finish
- relocate partly works, moving the application to the destination
  cluster, but clean up never finish.

Example run:

    $ drenv start envs/volsync.yaml
    2023-06-15 20:18:27,549 INFO    [volsync] Starting environment
    2023-06-15 20:18:27,580 INFO    [dr1] Starting minikube cluster
    2023-06-15 20:18:28,615 INFO    [dr2] Starting minikube cluster
    2023-06-15 20:25:08,994 INFO    [dr1] Cluster started in 401.41 seconds
    2023-06-15 20:25:08,994 INFO    [dr1/0] Running addons/volsync/start
    2023-06-15 20:25:31,110 INFO    [dr2] Cluster started in 422.49 seconds
    2023-06-15 20:25:31,110 INFO    [dr2/0] Running addons/volsync/start
    2023-06-15 20:28:00,920 INFO    [dr1/0] addons/volsync/start completed in 171.93 seconds
    2023-06-15 20:28:22,928 INFO    [dr2/0] addons/volsync/start completed in 171.82 seconds
    2023-06-15 20:28:22,929 INFO    [volsync] Environment started in 595.38 seconds

The new addons slow down start by 6 minutes, but I'm testing with very
slow network. Need to test again with good network.

Signed-off-by: Nir Soffer <nsoffer@redhat.com>

test/envs/regional-dr.yaml

@@ -18,6 +18,9 @@ templates:
     memory: "6g"
     extra_disks: 1
     disk_size: "50g"
+    addons:
+      - volumesnapshots
+      - csi-hostpath-driver
     workers:
       - addons:
           - name: cert-manager