Sometimes gsutil cp -r can miss files.  We also don't need to copy over
every file.  Additionally, I started to abstract the OS_ARCH away so
that we can more easily template the jenkins OS tests.

The KVM driver has trouble starting and stopping immediately.  This
happens with docker-machine also.

Set logging to verbose, cleanup config before runs.

Added appropriate executable permissions (755) in github shell scripts so jenkins can run them w/o modifying

Adding Jenkins files to /hack/jenkins  After this commit goes throught, changes to jenkins should be made to use the scripts in this /hack/jenkins folder directly

This script is what sets the pending statuses in Github before the builds
and tests run.