This change adds a github registration endpoint that instances can use
to fetch a github registration token.
This change also invalidates disables access to an instance to the token
and status updates endpoints once the instance transitions from
"pending" or "installing" to any other state.
The instance JWT token expiration time was set at 15 minutes, regardless
of bootstrap timeout. This meant that instances that take longer than 15
minutes, would not be able to send their status updates and github agent
ID back to garm.
Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>
* added interface for the github client. This will help mocking it
out for testing.
* removed some unused code
* moved some code around
Signed-off-by: Gabriel Adrian Samfira <gsamfira@cloudbasesolutions.com>
