Show errors from bootstrap (#471)
Show errors from bootstrap (#471)

Two issues that caused bad bootstrap error reporting:

1. we were rendering the 'deploy' controller immediately after
submitting the async bootstrap, so we were seeing an error from it first

2. a recent change has bootstrap writing to a file instead of piping to
the Popen object, so now we need to read from that file to show the
error in the ui.

Signed-off-by: Michael McCracken <678f76d0129c6a47299e3c6abb92ed26d253a960@canonical.com>
conjure-up/conjure-up,ubuntu/conjure-up,Ubuntu-Solutions-Engineering/conjure,ubuntu/conjure-up,conjure-up/conjure-up,Ubuntu-Solutions-Engineering/conjure