Reducing duplicated values on values files for SiaB

Reduced the amount of duplicated values between seba-ponsim values file.
To deploy, for example, the latest of seba-ponsim, now both seba-ponsim.yaml and seba-pomsim-latest.yaml values files need to be used with the specified order.
Makefile for SiaB is modified accordingly in the patch https://gerrit.opencord.org/#/c/16743/.
Also:
- removed stratumEnabled value from Mininet chart and added mnStratumSwitchCount
- moved bngAppUrl and bngAppVersion values on root of values file

Change-Id: I26b8e91f868646adc06f2c1feea72b333defd487
diff --git a/configs/seba-ponsim-latest.yaml b/configs/seba-ponsim-latest.yaml
index 128f92f..211b390 100644
--- a/configs/seba-ponsim-latest.yaml
+++ b/configs/seba-ponsim-latest.yaml
@@ -14,13 +14,11 @@
 # limitations under the License.
 
 # Values file for deploying SEBA with Ponsim
-# Use this file to deploy the 'master' (dev) versions of all services.
+# Use this file together to deploy the 'master' (dev) versions of all services.
+# This file can be used together with seba-ponsim.yaml, seba-ponsim-stratum.yaml
+# or seba-ponsim-sdbng.yaml
 # This is mainly useful for testing.
 
-# voltha
-etcd-cluster:
-  clusterSize: 1
-
 # in xos-core chart and other charts with multiple images
 images:
   xos_core:
@@ -105,24 +103,14 @@
   image:
     tag: 'master'
 
-  # this is mandatory, it's needed to correctly configure the kafka endpoint
-  kafkaService: cord-kafka
-
 # in workflow/tt-workflow service chart
 tt-workflow-driver:
   image:
     tag: 'master'
 
-  # this is mandatory, it's needed to correctly configure the kafka endpoint
-  kafkaService: cord-kafka
-
-# in mininet chart
-vlanMatchDepth: 2
-enableMulticast: True
-
-# in ponsim-pod chart
-bandwidthProfiles: True
-legacyPonsim: False
+dt-workflow-driver:
+  image:
+    tag: "master"
 
 # ONOS applications
 aaaAppUrl: "https://oss.sonatype.org/service/local/artifact/maven/redirect?r=snapshots&g=org.opencord&a=aaa-app&v=2.0.1-SNAPSHOT&e=oar"
@@ -139,3 +127,6 @@
 
 kafkaAppUrl: "https://oss.sonatype.org/service/local/artifact/maven/redirect?r=snapshots&g=org.opencord&a=kafka&v=2.0.1-SNAPSHOT&e=oar"
 kafkaAppVersion: "2.0.1.SNAPSHOT"
+
+bngAppUrl: "https://oss.sonatype.org/service/local/artifact/maven/redirect?r=snapshots&g=org.opencord&a=bng-app&v=1.0.0-SNAPSHOT&e=oar"
+bngAppVersion: "1.0.0.SNAPSHOT"