Complete scripts for zvm-validator job

Complete scripts for zvm-validator job

This change adds the final set of changes required to make the both zvm-validator CI jobs run completely: http://ci.oslab.cc/job/zvm-validator-nightly/ and http://ci.oslab.cc/job/zvm-validator/

The first job is configured to run nightly and publish packages to https://launchpad.net/~zerovm-ci/+archive/zerovm-latest. The second job is used to test individual pull requests and will also build packages -- but not publish them.

I've run tests on both jobs they seem to be working properly: http://ci.oslab.cc/job/zvm-validator-nightly/3/, http://ci.oslab.cc/job/zvm-validator/78/.

Note: Once this is merged, the `RAWGITURL` parameter will need to be updated on both job configurations to point to https://raw.github.com/zerovm.

Note: There is some duplication here between `jenkins.sh` and `jenkins-nightly.sh`; they're almost identical. There is potential for improvement here.