…et in parallel

* adds job id to fork id
* adds option to disable root tests
* documents this
* gets more tests working under the job/fork subdir rather
  than absolute paths. tracking them down is tricky.

Change-Id: I95530f883307b66971c0300631993798967b6739

Change-Id: Ieb9b5bbb0644c9e030dbdc80f51a032964e727ab

Change-Id: If00e579a831110886e0e1ade46fe72dbe70269fa

* cut mention of cloudstore sessionkeys
* review changes and cut back on diff

Change-Id: Ib2bdd02921f7cdbf9e0b924cab0bfbf30f21c395

Change-Id: I48fc6b30ba69a616fae688c45dffacc5da504014

* terasort uses path under fork/job id, which requires
  disabling test dir cleanup.
* +method name for logs includes memory option
* +reports CSV file includes memory flag
* sequential and surefire test runs also pass down job id,
  so that it is possible to safely run a single test in one process
  while a full suite runs against the same bucket.

Change-Id: Ib37ef6b5f23e5e7beb53d7c04c44e811ac4e2fa3

Change-Id: Ia2aa6e793a02914f2e391ad699ab998975f1a982

…ileSystem

I thought I'd already cleaned them, but yetus was still unhappy.

cleaned up the test even more to see if that helps

Change-Id: If4096e70e7921db8790fb56351077840cb4317d9

-always create base dir at the start of each test
-use methodPath()
-remove final relics of s3guard comments/qualifiers
-remove parameterization on directory marker retention,
 the default of "keep" stresses the trickiest bit
 of the code as it leaves more markers around.

Change-Id: Ib1fa2940116170bd5d00375ab51ed582f8cad1f6

Change-Id: I18a0bd833f302cbcc4676987647a6ce3ec731a8e

Change-Id: Ia340d186e142eeadec3b093edb2d14a30c2e5197