fixed bad glance params: pcmk_fs_dir,pcmk_fs_device

pcmk_fs_device should be set to the user-input network path,
not just the server name.
pcmk_fs_dir should be set to the default local path
Merge pull request #219 from sseago/pcmk_fs_params_fix

fixed bad glance params: pcmk_fs_dir,pcmk_fs_device