gbproxy: rename vty command "show gbproxy ..." to "show gbproxy bvc ..."

we have other objects to show, and the orthogoanl way to do this is
to rename the existing one.

Change-Id: I7836a37533a2de81720acedda712d61f429df12c
diff --git a/src/gb_proxy_vty.c b/src/gb_proxy_vty.c
index 976ac12..fc2e8f1 100644
--- a/src/gb_proxy_vty.c
+++ b/src/gb_proxy_vty.c
@@ -198,8 +198,9 @@
 	return CMD_SUCCESS;
 }
 
-DEFUN(show_gbproxy, show_gbproxy_cmd, "show gbproxy (bss|sgsn) [stats]",
+DEFUN(show_gbproxy_bvc, show_gbproxy_bvc_cmd, "show gbproxy bvc (bss|sgsn) [stats]",
        SHOW_STR "Display information about the Gb proxy\n"
+       "Show BSSGP Virtual Connections\n"
        "Display BSS-side BVCs\n"
        "Display SGSN-side BVCs\n"
        "Show statistics\n")
@@ -334,7 +335,7 @@
 
 int gbproxy_vty_init(void)
 {
-	install_element_ve(&show_gbproxy_cmd);
+	install_element_ve(&show_gbproxy_bvc_cmd);
 	install_element_ve(&show_gbproxy_links_cmd);
 	install_element_ve(&logging_fltr_bvc_cmd);