Merge pull request #68 from allenxwang/cp

Reopen closed but not merged pull request https://github.com/Netflix/ribbon/pull/64
[Gradle Release Plugin] - new version commit:  '0.3.7'.
distinguish between port and secure port in server list for client override
Merge pull request #71 from zarfide/issue-70

Pull request to address Issue 70
[Gradle Release Plugin] - new version commit:  '0.3.8'.
Make connection pool configuration dynamic - changeable at runtime through Archaius dynamic property.