Merge pull request #495 from rightscale/ivory_14_21_acu183994_managed_login_fixes_master

acu183994 Avoid spamming managed login tags rs-19437
acu184180 Bump rest-client to avoid sslv3 default. Mitigate POODLE vuln.
Merge pull request #496 from rightscale/ivory_14_21_acu184180_tlsv1_poodle

Ivory 14 21 acu184180 tlsv1 poodle