Update icons and strings for always-on VPN info

- Replaces the realistic outline of a key with the key icon used in
  other places, eg. status bar icon

- Updates string "tap to configure" to "tap to set up" and adds another
  string "always-on vpn disconnected" which is more neutral than
  "always-on VPN failed".

Bug: 29123115
Change-Id: I4685758b682dbc947423d4ec81891506a7dc826e

core/res/res/drawable-nodpi/vpn_connected.xml

@@ -0,0 +1,24 @@
+<!--
+Copyright (C) 2016 The Android Open Source Project
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="48dp"
+        android:height="48dp"
+        android:viewportWidth="48.0"
+        android:viewportHeight="48.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M25.3,20c-1.65,-4.66 -6.08,-8 -11.3,-8 -6.63,0 -12,5.37 -12,12s5.37,12 12,12c5.22,0 9.65,-3.34 11.3,-8H34v8h8v-8h4v-8H25.3zM14,28c-2.21,0 -4,-1.79 -4,-4s1.79,-4 4,-4 4,1.79 4,4 -1.79,4 -4,4z"/>
+</vector>

core/res/res/drawable-nodpi/vpn_disconnected.xml

@@ -0,0 +1,24 @@
+<!--
+Copyright (C) 2016 The Android Open Source Project
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+         http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+-->
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="48dp"
+        android:height="48dp"
+        android:viewportWidth="48.0"
+        android:viewportHeight="48.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M25.3,20c-1.65,-4.66 -6.08,-8 -11.3,-8 -6.63,0 -12,5.37 -12,12s5.37,12 12,12c5.22,0 9.65,-3.34 11.3,-8H34v8h8v-8h4v-8H25.3zM14,28c-2.21,0 -4,-1.79 -4,-4s1.79,-4 4,-4 4,1.79 4,4 -1.79,4 -4,4z"/>
+</vector>

core/res/res/values/strings.xml

@@ -3294,10 +3294,12 @@
     <string name="vpn_lockdown_connecting">Always-on VPN connecting\u2026</string>
     <!-- Notification title when connected to lockdown VPN. -->
     <string name="vpn_lockdown_connected">Always-on VPN connected</string>
+    <!-- Notification title when not connected to lockdown VPN. -->
+    <string name="vpn_lockdown_disconnected">Always-on VPN disconnected</string>
     <!-- Notification title when error connecting to lockdown VPN. -->
     <string name="vpn_lockdown_error">Always-on VPN error</string>
     <!-- Notification body that indicates user can touch to configure lockdown VPN connection. -->
-    <string name="vpn_lockdown_config">Tap to configure</string>
+    <string name="vpn_lockdown_config">Tap to set up</string>
 
     <!-- Localized strings for WebView -->
     <!-- Label for button in a WebView that will open a chooser to choose a file to upload -->

core/res/res/values/symbols.xml

@@ -1861,6 +1861,7 @@
   <java-symbol type="string" name="vpn_title_long" />
   <java-symbol type="string" name="vpn_lockdown_connecting" />
   <java-symbol type="string" name="vpn_lockdown_connected" />
+  <java-symbol type="string" name="vpn_lockdown_disconnected" />
   <java-symbol type="string" name="vpn_lockdown_error" />
   <java-symbol type="string" name="vpn_lockdown_config" />
   <java-symbol type="string" name="wallpaper_binding_label" />