Move the code about APK verification (4/n)

Bug: 161121612
Test: atest CtsAtomicInstallTestCases
Test: atest CtsPackageInstallTestCases
Test: atest CtsStagedInstallHostTestCases
Test: atest CtsInstallHostTestCases
Change-Id: I3d31cdef94e1b6ff634c9da03bd7a62a840e497a
2 files changed