Update vpnprofilestore_test to legacykeystore_test in TEST_MAPPING am: 8d9adfbafb am: 35c1714fa7

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/regex/+/1755970

Change-Id: I065ea416fe65b9977854546aa7876b3cdf695b12