add git to the http proxy configuration
fixes #2057 so that the fabric8 git repository is exposed properly via the http gateway
#2061 initial spike of fabric8-testkit that can spin up a remote fabric process and then use REST to query and interact with it; such that the same tests could work with a binary distribution and the command line, with a docker container, vm image or openshift cartridge rather than relying on in-container pax-exam/arquillian so we can properly test real distributions
#2061 basic working fabric8-testkit using a jolokia dynamic proxy to invoke the jolokia API and assert that the autoscaler can provision the requirements within a period of time
#2061 working autoscaling integration test using the fabric8-karaf distro via the fabric8-testkit to ensure the distro works and can auto-scale child containers