gprs_ns2_sns: implement local change weight procedure

When changing the bind ip-sns weight, initiate a
SNS CHANGE WEIGHT procedure to inform the other side.

Related: OS#5036
Change-Id: Icec4dabb46bc198f68f91bfe09ba279fbe68d454
diff --git a/src/gb/gprs_ns2.c b/src/gb/gprs_ns2.c
index a895e3d..adf3b32 100644
--- a/src/gb/gprs_ns2.c
+++ b/src/gb/gprs_ns2.c
@@ -1440,6 +1440,7 @@
 	nsi->timeout[NS_TOUT_TSNS_PROV] = 3; /* 1..10 */
 	nsi->timeout[NS_TOUT_TSNS_SIZE_RETRIES] = 3;
 	nsi->timeout[NS_TOUT_TSNS_CONFIG_RETRIES] = 3;
+	nsi->timeout[NS_TOUT_TSNS_PROCEDURES_RETRIES] = 3;
 
 	return nsi;
 }