mimic: pass --no-mon-config for osd config

Ensure that local configuration files are used for all
settings, instead of mon set configuration which requires
access to the mon cluster which may not be running at the
point in time that configuration is required.

Change-Id: I1fa80c78d6e6e501848d14098fe88d0df4f9e8bc

ceph/utils.py

@@ -1717,6 +1717,7 @@ def get_conf(variable):
     return subprocess.check_output([
         'ceph-osd',
         '--show-config-value={}'.format(variable),
+        '--no-mon-config',
     ]).strip()
 
 

unit_tests/test_utils.py

@@ -628,6 +628,7 @@ class CephTestCase(unittest.TestCase):
         _check_output.assert_called_with([
             'ceph-osd',
             '--show-config-value=bluestore_block_db_size',
+            '--no-mon-config',
         ])
 
     def test_partition_name(self):