'Returns role install info'

@property
def install_info(self):

    if (self._install_info is None):
        info_path = os.path.join(self.path, self.META_INSTALL)
        if os.path.isfile(info_path):
            try:
                f = open(info_path, 'r')
                self._install_info = yaml.safe_load(f)
            except:
                display.vvvvv(('Unable    to    load    Galaxy    install    info    for    %s' % self.name))
                return False
            finally:
                f.close()
    return self._install_info
