Check error status after installing each DSU partition

Add DynamicSystemManager.closePartition() that closes a partition
installation and returns its error status.
InstallationAsyncTask may call this method to do error checking.

Bug: 165471299
Test: Observe the logcat of a failed DSU installation
Change-Id: I9d155c70c6e490899a4acfd35c8096549af005d4