Install local or remote NApps.

        This method is recursive, it will install each napps and your
        dependencies.

def install_napps(cls, napps):
        """Install local or remote NApps.

        This method is recursive, it will install each napps and your
        dependencies.
        """
        mgr = NAppsManager()
        for napp in napps:
            mgr.set_napp(*napp)
            LOG.info('  NApp %s:', mgr.napp_id)

            if not mgr.is_installed():
                try:
                    cls.install_napp(mgr)
                    if not mgr.is_enabled():
                        cls.enable_napp(mgr)
                        napp_dependencies = mgr.dependencies()
                        if napp_dependencies:
                            LOG.info('Installing Dependencies:')
                            cls.install_napps(napp_dependencies)
                    else:
                        LOG.warning('  Napp already enabled.')
                except KytosException:
                    continue
            else:
                LOG.warning('  Napp already enabled.')