[CORD-2889]
Change to using premade `postgres` container

Change-Id: I3f4dc65d7b6957cbd9b8b7d5d3dc23045d4b1a82
diff --git a/docker_images.yml b/docker_images.yml
index f7ec2b6..75a41b6 100644
--- a/docker_images.yml
+++ b/docker_images.yml
@@ -31,6 +31,7 @@
   - "onosproject/onos:1.12.0"
   - "redis:3.2"
   - "node:7.9.0" # remove once the issue with node:candidate is resolved
+  - "postgres:10.3-alpine"
   - "sebp/elk:564"
 
 # buildable_images - list of images that we build from Dockerfiles
diff --git a/scenarios/controlkube/config.yml b/scenarios/controlkube/config.yml
index 4c0b6a2..b749254 100644
--- a/scenarios/controlkube/config.yml
+++ b/scenarios/controlkube/config.yml
@@ -110,10 +110,11 @@
   - "xosproject/chameleon"
   - "xosproject/xos-synchronizer-base"
   - "nginx"
+  - "node"
   - "onosproject/onos"
   - "opencord/mavenrepo"
+  - "postgres"
   - "redis"
-  - "node"
   - "sebp/elk"
 
 # Ansible Inventory
diff --git a/scenarios/controlpod/config.yml b/scenarios/controlpod/config.yml
index bf435e4..93443fe 100644
--- a/scenarios/controlpod/config.yml
+++ b/scenarios/controlpod/config.yml
@@ -75,10 +75,11 @@
   - "xosproject/chameleon"
   - "xosproject/xos-synchronizer-base"
   - "nginx"
+  - "node"
   - "onosproject/onos"
   - "opencord/mavenrepo"
+  - "postgres"
   - "redis"
-  - "node"
 
 # Ansible Inventory
 inventory_groups:
diff --git a/scenarios/cord/config.yml b/scenarios/cord/config.yml
index 63fe3b4..33542c3 100644
--- a/scenarios/cord/config.yml
+++ b/scenarios/cord/config.yml
@@ -139,10 +139,11 @@
   - "xosproject/chameleon"
   - "xosproject/xos-synchronizer-base"
   - "nginx"
+  - "node"
   - "onosproject/onos"
   - "opencord/mavenrepo"
+  - "postgres"
   - "redis"
-  - "node"
   - "sebp/elk"
 
 # node topology
diff --git a/scenarios/local/config.yml b/scenarios/local/config.yml
index 7e2d915..e74e535 100644
--- a/scenarios/local/config.yml
+++ b/scenarios/local/config.yml
@@ -51,9 +51,10 @@
   - "xosproject/xos-ws"
   - "xosproject/chameleon"
   - "xosproject/xos-synchronizer-base"
-  - "redis"
   - "nginx"
   - "node"
+  - "postgres"
+  - "redis"
 
 # Ansible Inventory
 inventory_groups:
diff --git a/scenarios/mock/config.yml b/scenarios/mock/config.yml
index ce0d91b..67bd937 100644
--- a/scenarios/mock/config.yml
+++ b/scenarios/mock/config.yml
@@ -72,8 +72,9 @@
   - "xosproject/xos-ws"
   - "xosproject/chameleon"
   - "nginx"
-  - "redis"
   - "node"
+  - "postgres"
+  - "redis"
 
 # Ansible Inventory
 inventory_groups:
diff --git a/scenarios/preppedkube/config.yml b/scenarios/preppedkube/config.yml
index db04ae2..1bf7b8a 100644
--- a/scenarios/preppedkube/config.yml
+++ b/scenarios/preppedkube/config.yml
@@ -111,10 +111,11 @@
   - "xosproject/chameleon"
   - "xosproject/xos-synchronizer-base"
   - "nginx"
+  - "node"
   - "onosproject/onos"
   - "opencord/mavenrepo"
+  - "postgres"
   - "redis"
-  - "node"
   - "sebp/elk"
 
 # Ansible Inventory
diff --git a/scenarios/preppedpod/config.yml b/scenarios/preppedpod/config.yml
index f04eff6..56b3b63 100644
--- a/scenarios/preppedpod/config.yml
+++ b/scenarios/preppedpod/config.yml
@@ -107,10 +107,11 @@
   - "xosproject/chameleon"
   - "xosproject/xos-synchronizer-base"
   - "nginx"
+  - "node"
   - "onosproject/onos"
   - "opencord/mavenrepo"
+  - "postgres"
   - "redis"
-  - "node"
   - "sebp/elk"
 
 # Ansible Inventory
diff --git a/scenarios/single/config.yml b/scenarios/single/config.yml
index 007aba8..adb25cf 100644
--- a/scenarios/single/config.yml
+++ b/scenarios/single/config.yml
@@ -77,10 +77,11 @@
   - "xosproject/chameleon"
   - "xosproject/xos-synchronizer-base"
   - "nginx"
+  - "node"
   - "onosproject/onos"
   - "opencord/mavenrepo"
+  - "postgres"
   - "redis"
-  - "node"
   - "sebp/elk"
 
 # Ansible Inventory