Fix puppet-opendaylight username/password test curl hang

11:33:45 Failures:
11:33:45
11:33:45 1) opendaylight class testing odl username/password using default username/password using non-default bind ip Command "sleep 180 && curl -o /dev/null --fail --silent --head -u admin:admin http://127.0.0.1:8080/restconf" exit_status should eq 0
11:33:45 Failure/Error: its(:exit_status)

Unknown macro: { should eq 0 }


11:33:45  
11:33:45  expected: 0
11:33:45  got: 7
11:33:45  
11:33:45  (compared using ==)
11:33:45  
11:33:45 # ./spec/spec_helper_acceptance.rb:385:in `block (2 levels) in username_password_validations'
11:33:45
11:33:45 Finished in 5 minutes 53 seconds (files took 54.73 seconds to load)
11:33:45 160 examples, 1 failure
11:33:45
11:33:45 Failed examples:
11:33:45
11:33:45 rspec ./spec/acceptance/class_spec.rb[1:6:1:1:3:1:1] # opendaylight class testing odl username/password using default username/password using non-default bind ip Command "sleep 180 && curl -o /dev/null --fail --silent --head -u admin:admin http://127.0.0.1:8080/restconf" exit_status should eq 0

https://logs.opendaylight.org/releng/jenkins092/puppet-test-full-master/230/console.log.gz

Looks like it's happening in all recent puppet-opendaylight jobs. For puppet-test-full, #201 on October 17th was the last daily job to pass. For puppet-test-sanity, #166 on October 17th was the last job to pass. No changes were merged into puppet-opendaylight between those passing build and the current failing builds. The patches that went in most recently before things broke was 4 days before (so daily jobs should have caught it before the 17th) and the verify jobs passed for the change.