[installd] Create profile snaphots for boot image

Create the profile snapshot for the boot image by aggregating all primary
profiles. During aggregation data that does not belong to the boot image
is filtered out. The matching is done based on the dex files provided in
the classpath argument.

Test: installd_dexopt_test
Bug: 30934496
Change-Id: Ib980ab3feb9f9838dff81a3861693cd08b1df9ab