Add volsync self test

Testing volsync without ramen is the best way to understand how it works
and how we need to use it when using minikube (or vanilla k8s?).

Work in progress:

- Add busybox deployment (based on ramen samples), but using
  securityContext so the pod does not run as root. This is not needed on
  openshift since it inject security context to the namespace, but with
  minikube plain busybox runs as root. This requires privileged volsync
  which may be possible but very complex to configure with ocm. Using
  security context looks like the right way to run workloads on minikube
  and supported by volsync.

- Add volsync replication destination - seems to work, but uses
  ClusterIP service, so not accessible from the source cluster. We need
  to add submariner to the volsync env to use volsync.

- Add volsync replication source - not tested yet.

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

test/addons/volsync/destination/kustomization.yaml

@@ -0,0 +1,7 @@
+# SPDX-FileCopyrightText: The RamenDR authors
+# SPDX-License-Identifier: Apache-2.0
+
+---
+resources:
+- namespace.yaml
+- pvc.yaml

test/addons/volsync/destination/namespace.yaml

@@ -0,0 +1,8 @@
+# SPDX-FileCopyrightText: The RamenDR authors
+# SPDX-License-Identifier: Apache-2.0
+
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: busybox

test/addons/volsync/destination/pvc.yaml

@@ -0,0 +1,17 @@
+# SPDX-FileCopyrightText: The RamenDR authors
+# SPDX-License-Identifier: Apache-2.0
+
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: busybox-pvc
+  namespace: busybox
+  labels:
+    appname: busybox
+spec:
+  accessModes: [ "ReadWriteOnce" ]
+  storageClassName: "csi-hostpath-sc"
+  resources:
+    requests:
+      storage: 1Gi

test/addons/volsync/destination/replication-dst.yaml

@@ -0,0 +1,20 @@
+# SPDX-FileCopyrightText: The RamenDR authors
+# SPDX-License-Identifier: Apache-2.0
+
+---
+apiVersion: volsync.backube/v1alpha1
+kind: ReplicationDestination
+metadata:
+  name: busybox-dst
+  namespace: busybox
+spec:
+  rsyncTLS:
+    copyMethod: Snapshot
+    capacity: 1Gi
+    accessModes: ["ReadWriteOnce"]
+    storageClassName: "csi-hostpath-sc"
+    volumeSnapshotClassName: csi-hostpath-snapclass
+    moverSecurityContext:
+      runAsUser: 10000
+      runAsGroup: 10000
+      fsGroup: 10000

test/addons/volsync/source/deploy.yaml

@@ -0,0 +1,37 @@
+# SPDX-FileCopyrightText: The RamenDR authors
+# SPDX-License-Identifier: Apache-2.0
+
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    appname: busybox
+  name: busybox
+  namespace: busybox
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      appname: busybox
+  template:
+    metadata:
+      labels:
+        appname: busybox
+    spec:
+      containers:
+      - image: docker.io/library/busybox:latest
+        imagePullPolicy: IfNotPresent
+        name: busybox
+        command: ['sh', '-c', 'trap exit TERM; while true; do echo $(date) | tee -a /mnt/test/outfile; sync; sleep 10 & wait; done']
+        volumeMounts:
+          - name: volume
+            mountPath: /mnt/test
+      volumes:
+        - name: volume
+          persistentVolumeClaim:
+            claimName: busybox-pvc
+      securityContext:
+        runAsUser: 10000
+        runAsGroup: 10000
+        fsGroup: 10000

test/addons/volsync/source/kustomization.yaml

@@ -0,0 +1,8 @@
+# SPDX-FileCopyrightText: The RamenDR authors
+# SPDX-License-Identifier: Apache-2.0
+
+---
+resources:
+- namespace.yaml
+- pvc.yaml
+- deploy.yaml

test/addons/volsync/source/namespace.yaml

@@ -0,0 +1,8 @@
+# SPDX-FileCopyrightText: The RamenDR authors
+# SPDX-License-Identifier: Apache-2.0
+
+---
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: busybox

test/addons/volsync/source/pvc.yaml

@@ -0,0 +1,17 @@
+# SPDX-FileCopyrightText: The RamenDR authors
+# SPDX-License-Identifier: Apache-2.0
+
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: busybox-pvc
+  namespace: busybox
+  labels:
+    appname: busybox
+spec:
+  accessModes: [ "ReadWriteOnce" ]
+  storageClassName: "csi-hostpath-sc"
+  resources:
+    requests:
+      storage: 1Gi

test/addons/volsync/source/replication-src.yaml

@@ -0,0 +1,22 @@
+# SPDX-FileCopyrightText: The RamenDR authors
+# SPDX-License-Identifier: Apache-2.0
+
+---
+apiVersion: volsync.backube/v1alpha1
+kind: ReplicationSource
+metadata:
+  name: busybox-src
+  namespace: busybox
+spec:
+  sourcePVC: busybox-pvc
+  trigger:
+    schedule: "*/1 * * * *"
+  rsyncTLS:
+    keySecret: busybox-dst-secret
+    address: 192.168.122.150
+    copyMethod: Snapshot
+    volumeSnapshotClassName: csi-hostpath-snapclass
+    moverSecurityContext:
+      runAsUser: 10000
+      runAsGroup: 10000
+      fsGroup: 10000