vty: Provide a is_config_node for the VTY and use it for the bsc
Right now only bsc_hack and osmo_bsc need to have a custom
config handling as they use the subscr/oml nodes.
diff --git a/openbsc/configure.in b/openbsc/configure.in
index 0167725..6adee33 100644
--- a/openbsc/configure.in
+++ b/openbsc/configure.in
@@ -44,7 +44,7 @@
AM_CONDITIONAL(BUILD_BSC, test "x$osmo_ac_build_bsc" = "xyes")
PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 0.1.18)
-PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 0.1.9)
+PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 0.1.19)
dnl checks for header files
AC_HEADER_STDC