Merge "Add a mutability flag to the PendingIntent in DynamicSystemInstallationService" am: dc0b992c75 am: 5107e43858 am: 46a6aee06d

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1479478

Change-Id: I2478335e58a2b63b9cf4dcf1621654cca89cf828