Add a version number to Dialer

Bug: 23153842
Change-Id: If1c4d1d20a76a4bf4ec8d2201cf1d34126fbd37e
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index ae1e3d6..2bf4707 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -16,7 +16,9 @@
 
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.android.dialer"
-    coreApp="true">
+    coreApp="true"
+    android:versionCode="20210"
+    android:versionName="2.21">
 
     <uses-sdk
         android:minSdkVersion="23"