Added new implementation for the following feature requests:

1. Transaction ID support for message sending
2. Exposing rmr_mbuf_t to applications – message receiving
3. Exposing rmr_mbuf_t to applcations – message sending
4. Support functions

Contribution also from: Juha Hyttinen <juha.hyttinen@nokia.com>

Change-Id: I0fcf10b4e8af50c3b68c31cc4f800a00cd79b8f0
Signed-off-by: Mohamed Abukar <abukar.mohamed@nokia.com>
diff --git a/pkg/xapp/config.go b/pkg/xapp/config.go
index 0493059..1f90a1a 100755
--- a/pkg/xapp/config.go
+++ b/pkg/xapp/config.go
@@ -81,6 +81,10 @@
 	return viper.GetInt(key)
 }
 
+func (*Configurator) GetUint32(key string) uint32 {
+	return viper.GetUint32(key)
+}
+
 func (*Configurator) GetBool(key string) bool {
 	return viper.GetBool(key)
 }