remove dependency on OSJC library to setup proxy host and port per OSJC-68
Merge pull request #20 from developercorey/deprecate_apiresource_proxy_configuration

remove dependency on OSJC library to setup proxy host and port per OSJC-68
allow for optional specification of jar cache path via JENKINS_JAR_CACHE_PATH
Merge pull request #22 from bparees/master

allow for optional specification of jar cache path via JENKINS_JAR_CACHE_PATH