Code review comment for lp:~frankban/juju-quickstart/ftest-fixes

*** Submitted:

Make ftests fail if Juju env is not ready.

The functional tests are no longer silently skipped
if the default Juju environment cannot be found.

Also fail if the environment is running, as this
would cause it to be destroyed at the end of the
suite.

QA:
- bootstrap your default environment;
- run `make ftest`/`make fcheck` and ensure
   the functional tests fail
   (environment already bootstrapped);
- destroy your environment;
- run `make fcheck` again and ensure all the
   suites complete successfully.

R=jeff.pihach, kadams54
CC=
https://codereview.appspot.com/195690043

https://codereview.appspot.com/195690043/