deploy: add API for getting OpenShift SecurityContextConstraints

This new Go module allows other projects (like Rook) to consume
deployment details (the SCC to get started) directly from Ceph-CSI.

Based-on: https://github.com/rook/rook/blob/3c93eb3/cluster/examples/kubernetes/ceph/operator-openshift.yaml#L47-L90
Signed-off-by: Niels de Vos <ndevos@redhat.com>

api/deploy/ocp/scc.yaml

@@ -0,0 +1,43 @@
+---
+kind: SecurityContextConstraints
+apiVersion: security.openshift.io/v1
+metadata:
+  name: "{{ .Prefix }}ceph-csi"
+# To allow running privilegedContainers
+allowPrivilegedContainer: true
+# CSI daemonset pod needs hostnetworking
+allowHostNetwork: true
+# This need to be set to true as we use HostPath
+allowHostDirVolumePlugin: true
+priority:
+# SYS_ADMIN is needed for rbd to execture rbd map command
+allowedCapabilities: ["SYS_ADMIN"]
+# Needed as we run liveness container on daemonset pods
+allowHostPorts: true
+# Needed as we are setting this in RBD plugin pod
+allowHostPID: true
+# Required for encryption
+allowHostIPC: true
+# Set to false as we write to RootFilesystem inside csi containers
+readOnlyRootFilesystem: false
+runAsUser:
+  type: RunAsAny
+seLinuxContext:
+  type: RunAsAny
+fsGroup:
+  type: RunAsAny
+supplementalGroups:
+  type: RunAsAny
+# The type of volumes which are mounted to csi pods
+volumes:
+  - configMap
+  - projected
+  - emptyDir
+  - hostPath
+users:
+  # A user needs to be added for each service account.
+  - "system:serviceaccount:{{ .Namespace }}:{{ .Prefix }}csi-rbd-plugin-sa"
+  - "system:serviceaccount:{{ .Namespace }}:{{ .Prefix }}csi-rbd-provisioner-sa"
+  - "system:serviceaccount:{{ .Namespace }}:{{ .Prefix }}csi-cephfs-plugin-sa"
+  # yamllint disable-line rule:line-length
+  - "system:serviceaccount:{{ .Namespace }}:{{ .Prefix }}csi-cephfs-provisioner-sa"