Upgraded to just released ec2-plugin 1.30. Have no Jenkins slave running. Trying to get it to auto-create a new slave by running a job.

Get this repeatedly in my jenkins log:
```
Jan 24, 2016 2:00:52 PM INFO hudson.plugins.ec2.EC2Cloud provisionSlaveIfPossible
Cannot provision - no capacity for instances: -177
Jan 24, 2016 2:00:52 PM INFO hudson.plugins.ec2.EC2Cloud provision
Attempting provision - finished, excess workload: 1
Jan 24, 2016 2:00:59 PM INFO hudson.plugins.ec2.EC2Cloud provisionSlaveIfPossible
Cannot provision - no capacity for instances: -177
Jan 24, 2016 2:00:59 PM INFO hudson.plugins.ec2.EC2Cloud provision
Attempting provision - finished, excess workload: 1
```

In our EC2 region, at the moment we have no Jenkins slaves running, neither on-demand nor spot. There are about 183 instances running or stopped. I think it's counting every single instance, and counting them all against the max slave.

This happens regardless of whether I have jenkins configured to create on demand slave or spot slaves.

Have to downgrade to get it to autocreate slaves.