Fix modelschema.schema_list()

  * Fix glob path, since :
    ipdb> print '{}/*/*/schemas/*.yaml'.format(_get_base_dir())
    /usr/share/salt-formulas/env/*/*/schemas/*.yaml
    Process empty list:
    ipdb> print schemas
    []

Change-Id: I6ad048cb601baea9282e3c2a30fb79fdddd1ee0b
1 file changed