Prepare installd to handle profiles per code path

Transform each profile operation to accept the pair
(package_name, profile_name). This will allow installd to get the profile
name from the PackageManager instead of assuming a predefined name. The
PackageManager will compute and assign unique profile names for each code
path.

The end goal is to support installation and extraction of profiles per
code path.

Also, add a few extra tests for merging the profiles.

(cherry picked from commit cfcd6aa2)

Test: installd_dexopt_test, installd_utils_test
Bug: 30934496
Merged-In: I580f037d9d3e5537032e815dc803b9ddeff343cb
Change-Id: I580f037d9d3e5537032e815dc803b9ddeff343cb