Updating 5G, 4G control plane images

smf image update to send correct FAR
mme image update : memory leak fix and pco not sent to spgw issue
spgw : new thread to handle DNS request

Change-Id: Ieb5a50b89bcf4ec2a6e30351377cdefd5c3be8e0
diff --git a/5g-control-plane/Chart.yaml b/5g-control-plane/Chart.yaml
index d4962e3..743f7f2 100644
--- a/5g-control-plane/Chart.yaml
+++ b/5g-control-plane/Chart.yaml
@@ -8,7 +8,7 @@
 name: 5g-control-plane
 icon: https://guide.opencord.org/logos/cord.svg
 
-version: 0.5.5
+version: 0.5.6
 
 dependencies:
   - name: mongodb