Revert "Fix DS-1408 based on hints at http://stackoverflow.com/questions/4162557/timeout-error-trying-to-lock-table-in-h2"

This reverts commit 4f808e72367e821557ba18a3e086b04b3c504db2.
Put detailed test logs in *-output.txt files instead of stdout
Tell TravisCI to cache ~/.m2 directory for our builds
Merge pull request #584 from tdonohue/DS-2075

DS-2075 : Decrease number of log messages for Travis CI & our sanity
Merge pull request #582 from tdonohue/DS-1408

DS-1408 - revert unnecessary  MVCC setting for H2 database
Increase database lock timeout to avoid lock errors
Merge pull request #588 from tdonohue/DS-1408

DS-1408 : Increase database lock timeout to avoid lock errors