[VTY] Introduce "end" command that works from any level in config
Using "end" you can always return to the "enable" level, and from
there the "show" commands are available. So no more need for
exit/exit/exit/exit/disable.
diff --git a/openbsc/src/gprs/sgsn_vty.c b/openbsc/src/gprs/sgsn_vty.c
index 4dc6257..d56a279 100644
--- a/openbsc/src/gprs/sgsn_vty.c
+++ b/openbsc/src/gprs/sgsn_vty.c
@@ -127,6 +127,7 @@
install_node(&sgsn_node, config_write_sgsn);
install_default(SGSN_NODE);
install_element(SGSN_NODE, &ournode_exit_cmd);
+ install_element(SGSN_NODE, &ournode_end_cmd);
install_element(SGSN_NODE, &cfg_nsip_local_ip_cmd);
install_element(SGSN_NODE, &cfg_nsip_local_port_cmd);