Convert CtsSecurityBulletinHostTestCases to JUnit4

Bug: 150315725
Test: sts-tradefed run sts-engbuild-no-spl-lock -m CtsSecurityBulletinHostTestCases
Change-Id: Ic1eb7bb5b3adc464835f2ba3bf97906e540849a0
Merged-In: Ic1eb7bb5b3adc464835f2ba3bf97906e540849a0
37 files changed