Add optional mtls secret mount for manager

The MTLS secret is currently hardcoded to longhorn-grpc-tls we can improve
this further in the future when necessary to also enable auto cert generation

Longhorn #3839

Signed-off-by: Joshua Moody <joshua.moody@suse.com>

chart/templates/daemonset-sa.yaml

@@ -58,6 +58,8 @@ spec:
         - name: longhorn
           mountPath: /var/lib/longhorn/
           mountPropagation: Bidirectional
+        - name: longhorn-grpc-tls
+          mountPath: /tls-files/
         - name: longhorn-default-setting
           mountPath: /var/lib/longhorn-setting/
         env:
@@ -85,6 +87,10 @@ spec:
       - name: longhorn
         hostPath:
           path: /var/lib/longhorn/
+      - name: longhorn-grpc-tls
+        secret:
+          secretName: longhorn-grpc-tls
+          optional: true
       - name: longhorn-default-setting
         configMap:
           name: longhorn-default-setting

deploy/longhorn.yaml

@@ -3375,6 +3375,8 @@ spec:
         - name: longhorn
           mountPath: /var/lib/longhorn/
           mountPropagation: Bidirectional
+        - name: longhorn-grpc-tls
+          mountPath: /tls-files/
         - name: longhorn-default-setting
           mountPath: /var/lib/longhorn-setting/
         env:
@@ -3402,6 +3404,10 @@ spec:
       - name: longhorn
         hostPath:
           path: /var/lib/longhorn/
+      - name: longhorn-grpc-tls
+        secret:
+          secretName: longhorn-grpc-tls
+          optional: true
       - name: longhorn-default-setting
         configMap:
           name: longhorn-default-setting