rspro_client_fsm: Migrate to ipa_client_conn_create2()

libosmo-abis 0.8.0 has deprecated ipa_client_conn_create() and this
follow-up patch avoids the related deprecation compiler warnings.

Change-Id: I0057c5b6a79e7226e87983c14eb2b0ed2af2a131
diff --git a/configure.ac b/configure.ac
index 26c330b..0c1f595 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,7 +37,7 @@
 
 PKG_CHECK_MODULES(OSMOCORE, libosmocore >= 1.3.0)
 PKG_CHECK_MODULES(OSMOGSM, libosmogsm >= 0.11.0)
-PKG_CHECK_MODULES(OSMOABIS, libosmoabis)
+PKG_CHECK_MODULES(OSMOABIS, libosmoabis >= 0.8.0)
 
 AC_ARG_ENABLE([remsim-server],[AS_HELP_STRING([--disable-remsim-server], [Build osmo-remsim-server])],
 	[osmo_ac_build_server="$enableval"],[osmo_ac_build_server="yes"])