deployments: dsa: Add DSA accel-config initcontainer

Previously idxd kernel module instantiated some
default DSA devices and workqueues on boot.

This is a sample deployment that provisions DSA devices and
workqueues for intel-dsa-plugin with accel-config utility
through initcontainer.

Signed-off-by: Oleg Zhurakivskyy <oleg.zhurakivskyy@intel.com>

Author: ozhuraki

deployments/dsa_plugin/overlays/dsa_initcontainer/dsa_initcontainer.yaml

@@ -0,0 +1,19 @@
+apiVersion: apps/v1
+kind: DaemonSet
+metadata:
+  name: intel-dsa-plugin
+spec:
+  template:
+    spec:
+      initContainers:
+      - name: intel-dsa-initcontainer
+        image: intel/intel-dsa-initcontainer:devel
+        securityContext:
+          privileged: true
+        volumeMounts:
+        - mountPath: /sys/devices
+          name: sys-devices
+      volumes:
+      - name: sys-devices
+        hostPath:
+          path: /sys/devices

deployments/dsa_plugin/overlays/dsa_initcontainer/kustomization.yaml

@@ -0,0 +1,4 @@
+bases:
+- ../../base
+patchesStrategicMerge:
+- dsa_initcontainer.yaml