Improve logging in VTS VtsTrebleVendorVintfTest

In VtsTrebleVendorVintfTest, the test cases VtsTrebleVendorVintfTest#DeviceManifest/SingleManifestTest.ServedHwbinderHalsAreInManifest/0_64bit and VtsTrebleVendorVintfTest#DeviceManifest/SingleManifestTest.ServedHwbinderHalsAreInManifest/0_32bit don't log which services caused them to fail. This patch improves the logging

Bug: 154917134
Test: Presubmit
Change-Id: I3d3288dcbdce8160ec2758d59467cf81a6aa4f77
(cherry picked from commit 8a8f1b16bb690a74759a9e50d73a0996646c2f37)
1 file changed