Description of problem:
rbd-target-gw service on machine installed by ceph-ansible fails to start with following error:

Removing iSCSI target from LIO
Removing iSCSI target from LIO
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/bin/rbd-target-gw", line 33, in exception_handler
clearconfig()
File "/usr/bin/rbd-target-gw", line 82, in clearconfig
gw.drop_target(local_gw)
File "/usr/lib/python2.7/site-packages/ceph_iscsi_config/lio.py", line 58, in drop_target
if this_host in self.config.config['gateways']:
AttributeError: 'Config' object has no attribute 'config'
Original exception was:
Traceback (most recent call last):
File "/usr/bin/rbd-target-gw", line 462, in <module>
halt("Unable to open/read the configuration object")
File "/usr/bin/rbd-target-gw", line 210, in halt
clearconfig()
File "/usr/bin/rbd-target-gw", line 82, in clearconfig
gw.drop_target(local_gw)
File "/usr/lib/python2.7/site-packages/ceph_iscsi_config/lio.py", line 58, in drop_target
if this_host in self.config.config['gateways']:
AttributeError: 'Config' object has no attribute 'config'



Version-Release number of selected component (if applicable):
ceph-iscsi-config-2.3-11.el7cp.noarch

How reproducible:
100%

Steps to Reproduce:
1. Install ceph with iSCSI gateway using ceph-ansible
2.
3.

Actual results:
rbd-target-gw fails to start

Expected results:
rbd-target-gw runs correctly

Additional info:
Changing the line in /usr/lib/python2.7/site-packages/ceph_iscsi_config/lio.py from:

iqn = self.config.config['gateways'][this_host]['iqn']

to:

iqn = self.config['gateways'][this_host]['iqn']

fixed the issue.