Merge "Add a mutability flag to the PendingIntent in DynamicSystemInstallationService" am: dc0b992c75 am: 5107e43858 am: 46a6aee06d am: 0e0af4cf47

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

Change-Id: I7fb65a386b3a058c4da0f2d539e2903aae180987