Infrastructure

i'm unable to reimage mero018 with rhel 7.7 getting

./teuthology-lock --lock-many 1 --machine-type mero --os-type rhel --os-version 7.7
2020-04-03 08:15:53,271.271 INFO:teuthology.provision.fog.mero018:Scheduling deploy of rhel 7.7
2020-04-03 08:15:53,564.564 INFO:teuthology.orchestra.console:Power off mero018
2020-04-03 08:16:02,145.145 INFO:teuthology.orchestra.console:Power off for mero018 completed
2020-04-03 08:16:02,245.245 INFO:teuthology.orchestra.console:Power on mero018
2020-04-03 08:16:10,614.614 INFO:teuthology.orchestra.console:Power on for mero018 completed
2020-04-03 08:16:10,715.715 INFO:teuthology.provision.fog.mero018:Waiting for deploy to finish
Traceback (most recent call last):
  File "./teuthology-lock", line 11, in <module>
    load_entry_point('teuthology', 'console_scripts', 'teuthology-lock')()
  File "/home/prsurve/teuthology/scripts/lock.py", line 18, in main
    sys.exit(teuthology.lock.cli.main(parse_args(sys.argv[1:])))
  File "/home/prsurve/teuthology/teuthology/lock/cli.py", line 201, in main
    ctx.desc, ctx.os_type, ctx.os_version, ctx.arch)
  File "/home/prsurve/teuthology/teuthology/lock/ops.py", line 139, in lock_many
    reimaged[machine] = machines[machine]
  File "/home/prsurve/teuthology/teuthology/parallel.py", line 85, in __exit__
    for result in self:
  File "/home/prsurve/teuthology/teuthology/parallel.py", line 99, in next
    resurrect_traceback(result)
  File "/home/prsurve/teuthology/teuthology/parallel.py", line 22, in capture_traceback
    return func(*args, **kwargs)
  File "/home/prsurve/teuthology/teuthology/provision/__init__.py", line 26, in reimage
    return fog_obj.create()
  File "/home/prsurve/teuthology/teuthology/provision/fog.py", line 85, in create
    self.wait_for_deploy_task(task_id)
  File "/home/prsurve/teuthology/teuthology/provision/fog.py", line 245, in wait_for_deploy_task
    while proceed():
  File "/home/prsurve/teuthology/teuthology/contextutil.py", line 132, in __call__
    raise MaxWhileTries(error_msg)
teuthology.exceptions.MaxWhileTries: reached maximum tries (60) after waiting for 900 seconds