Merge pull request #254 from rightscale/teal_13_15_acu129913_fix_broken_specs

teal_13_15_acu129913_fix_broken_specs
acu125533 redirect wall output to /dev/null
Merge pull request #256 from rightscale/ivory_13_15_acu125533_wall_cleanup

acu125533 redirect wall output to /dev/null
acu127362 - Release Doc update for RC1
acu127362 - code review feedback
acu127362 - code review feedback round 2
Merge pull request #257 from rightscale/ivory_13_15_acu127362_release_candidate_1

Ivory 13 15 acu127362 release candidate 1