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

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

Change-Id: I78b38fdf4bd8ddad4eb6abf9ddf89c15e6537093