Ps Cinder: Added support for password less login

Added missing san_private_key parameter used for password less SSH
authentication.

Change-Id: I6d7544b525055318aa567f9cbbe318d82bafacf0
Depends-On: 70db86d336

environments/cinder-dellps-config.yaml

@@ -23,6 +23,7 @@ parameter_defaults:
   CinderDellPsSanIp: ''
   CinderDellPsSanLogin: ''
   CinderDellPsSanPassword: ''
+  CinderDellPsSanPrivateKey: ''
   CinderDellPsSanThinProvision: true
   CinderDellPsGroupname: 'group-0'
   CinderDellPsPool: 'default'

puppet/services/cinder-backend-dellps.yaml

@@ -31,6 +31,9 @@ parameters:
   CinderDellPsSanPassword:
     type: string
     hidden: true
+  CinderDellPsSanPrivateKey:
+    type: string
+    default: ''
   CinderDellPsSanThinProvision:
     type: boolean
     default: true
@@ -83,6 +86,7 @@ outputs:
         cinder::backend::eqlx::san_ip: {get_param: CinderDellPsSanIp}
         cinder::backend::eqlx::san_login: {get_param: CinderDellPsSanLogin}
         cinder::backend::eqlx::san_password: {get_param: CinderDellPsSanPassword}
+        cinder::backend::eqlx::san_private_key: {get_param: CinderDellPsSanPrivateKey}
         cinder::backend::eqlx::san_thin_provision: {get_param: CinderDellPsSanThinProvision}
         cinder::backend::eqlx::eqlx_group_name: {get_param: CinderDellPsGroupname}
         cinder::backend::eqlx::eqlx_pool: {get_param: CinderDellPsPool}

releasenotes/notes/ps-san_private_key-5aa111e7907ba600.yaml

@@ -0,0 +1,4 @@
+---
+features:
+  - Added new parameter san_private_key to configure SSH Private Key
+    for the PS Series cinder backend