Enable EOSTest_M test

eostest_m was disabled during the time of o-release. This is
enabled now. Also improved logging

Test: make vts -j99 BUILD_GOOGLE_VTS=true TARGET_PRODUCT=aosp_arm64 \
&& vts-tradefed run commandAndExit vts \
--skip-all-system-status-check --primary-abi-only \
--skip-preconditions --module VtsHalMediaOmxV1_0Host \
-l INFO

Bug: 63796949

Change-Id: I4797fce4f5911d9f37f5c91f179d9ab9263177f0