[CTS incremental] Log adb incremental install output

cts incremental tests succeed locally but fail on the cloud at the adb install phase. Logging the output from the adb command will help debug this issue.

Test: cts-tradefed run cts -m CtsIncrementalInstallHostTestCases
Bug: 153700435
Change-Id: I8b32784b9cf6edaa653f1ed5c9d3731f643ea055
1 file changed