ci: print-bosh-job-diff actually diffs
ci: print-bosh-job-diff actually diffs

- call `git diff` instead of `git log`
- Adds the `--no-pager` option to prevent git from automatically filling
the window with tildes.

Signed-off-by: Josh Russett <51387f2e18a282e19bf73e3a4ebd17eb7c8325fd@vmware.com>

cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release