Log contents of files created or modified by IPAChangeConf

This will show the status of the files during an installation.
This is particularly important during a replica install where
default.conf gets written several times.

Fixes: https://pagure.io/freeipa/issue/7218

Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Fraser Tweedale <ftweedal@redhat.com>

ipaclient/install/ipachangeconf.py

@@ -19,6 +19,7 @@
 #
 
 import fcntl
+import logging
 import os
 import shutil
 
@@ -27,6 +28,8 @@ import six
 if six.PY3:
     unicode = str
 
+logger = logging.getLogger(__name__)
+
 def openLocked(filename, perms):
     fd = -1
     try:
@@ -506,6 +509,8 @@ class IPAChangeConf(object):
                     f.close()
             except IOError:
                 pass
+        logger.debug("Updating configuration file %s", file)
+        logger.debug(output)
         return True
 
     def newConf(self, file, options, file_perms=0o644):
@@ -541,6 +546,8 @@ class IPAChangeConf(object):
                     f.close()
             except IOError:
                 pass
+        logger.debug("Writing configuration file %s", file)
+        logger.debug(output)
         return True
 
     @staticmethod