Annotate security tests with @AsbSecurityTest.

These tests need to be annotated with @AsbSecurityTest
to be included in the sts.

Bug: 303227969
Test: atest CtsBlobStoreTestCases
Flag: TEST_ONLY
Change-Id: I3bbe61f5945a20ebb1a01cc415f8da9761793a85
Merged-In: I3bbe61f5945a20ebb1a01cc415f8da9761793a85
(cherry picked from commit d23d58461cc77f18f934a404dab589c80f02d4e6)