Basic Juju-Core CI is up

[Curtis Hovey-Canonical]

Sorry, I premature send failure.

We have established basic CI of juju-core. The jenkin's instance is a
charm running on canonitack:
    http://162.213.34.53:8080/
We are testing juju-core devel and stable on precise with local,
canonistack, HP Cloud, AWS and Azure.

We are now in a position elaborate the tests or create additional
dimensions. We plan to and trusty next week.