Use ConfigParser instead of SafeConfigParser
Use ConfigParser instead of SafeConfigParser

The SafeConfigParser class has been renamed to ConfigParser in Python
3.2 [1]. This alias will be removed in future versions.So we can use
ConfigParser directly instead.

[1] http://bugs.python.org/issue10627

Change-Id: I8cc3bcde108916bda6b8ac95cae9abefe3b5cdee
Closes-Bug: #1618666

openstack/designate,openstack/designate,openstack/designate