add ability to refer deployment by uuid or name

  also deployment name turned unique in db

Change-Id: I513b5259e0cfa66780b4ce00cf78dc57aeeb57db
add 'rally task list' filters

  Add ability to filter tasks by status and/or deployment.

Change-Id: I663bddf73a4d5be1b24e712ddcde9efdf494f005