Allowed primary checks should be case insensitive

Previously, for default directories, allowed primary check in insert()
operations were case sensitive. Also, the method to obtain the uri for
insert() from FUSE based on the top level directory was case sensitive.
This made these checks fail if the default directories were created in
lower case instead of standard name defined in Environment.java.
Changed these methods to case insensitive check.

Bug: 175809012
Test: atest ScopedStorageDeviceTest#testInsertDefaultPrimaryCaseInsensitiveCheck
Change-Id: I02badd74b193638e46482dc488bf5e4458506b7f
1 file changed