feat(tests): repeat test script enhancements

[andrewazores]

Fixes #1017

• feat(tests): allow MVN env var to override maven binary location
• fix(tests): ensure log file directories and files are created and truncated
• ensure tests are compiled before run
• implement second arg as test selector

[andrewazores]

With this change you should be able to do ex.

$ mvn clean # simulate a freshly cloned repo - or actually freshly clone one
$ bash repeated-integration-tests.bash 2 ReportIT # run the ReportIT test only, and run it twice

similarly

$ bash repeated-unit-tests.bash 10 RecordingTargetHelperTest
$ bash repeated-unit-tests.bash 1 RecordingArchiveHelperTest,RecordingTargetHelperTest,*GetHandlerTest

[maxcao13]

Works well!