add cloudbeat mounts and volumes to elastic-managed manifest (#795)

Author: oren-zohar

internal/testrunner/runners/system/servicedeployer/elastic-agent-managed.yaml.tmpl

@@ -63,6 +63,11 @@ spec:
             - name: proc
               mountPath: /hostfs/proc
               readOnly: true
+            - name: etc-kubernetes
+              mountPath: /hostfs/etc/kubernetes
+            - name: var-lib
+              mountPath: /hostfs/var/lib
+              readOnly: true
             - name: cgroup
               mountPath: /hostfs/sys/fs/cgroup
               readOnly: true
@@ -72,10 +77,31 @@ spec:
             - name: varlog
               mountPath: /var/log
               readOnly: true
+            - name: passwd
+              mountPath: /hostfs/etc/passwd
+              readOnly: true
+            - name: group
+              mountPath: /hostfs/etc/group
+              readOnly: true
+            - name: etcsysmd
+              mountPath: /hostfs/etc/systemd
+              readOnly: true
       volumes:
         - name: proc
           hostPath:
             path: /proc
+        - name: etc-kubernetes
+          hostPath:
+            path: /etc/kubernetes
+        - name: var-lib
+          hostPath:
+            path: /var/lib
+        - name: passwd
+          hostPath:
+            path: /etc/passwd
+        - name: group
+          hostPath:
+            path: /etc/group
         - name: cgroup
           hostPath:
             path: /sys/fs/cgroup
@@ -85,6 +111,9 @@ spec:
         - name: varlog
           hostPath:
             path: /var/log
+        - name: etcsysmd
+          hostPath:
+            path: /etc/systemd
 ---
 apiVersion: rbac.authorization.k8s.io/v1
 kind: ClusterRoleBinding