Send ACTION_KEYCHAIN_CHANGED when installing a cert

Change-Id: I846162511b5d75d937d4c543d47d535894e1d688
Fixes: 36492950
Test: Verified that installing a cert via UI triggers the broadcast

src/com/android/settings/CredentialStorage.java

@@ -295,6 +295,10 @@ public final class CredentialStorage extends Activity {
             }
         }
 
+        // Send the broadcast.
+        Intent broadcast = new Intent(KeyChain.ACTION_KEYCHAIN_CHANGED);
+        sendBroadcast(broadcast);
+
         setResult(RESULT_OK);
     }