Fix congress broken

Change-Id: I25c426646ed7de88e3468c6f6923fe6dc72ab028
Closes-Bug: #1634641

ansible/roles/congress/templates/congress-api.json.j2

 {
-    "command": "congress-server --api --node_id=api-node --config-file /etc/congress/congress.conf",
+    "command": "congress-server --api --node-id=api-node --config-file /etc/congress/congress.conf",
     "config_files": [
         {
             "source": "{{ container_config_directory }}/congress.conf",

ansible/roles/congress/templates/congress-datasource.json.j2

 {
-    "command": "congress-server --datasources --node_id=data-node --config-file /etc/congress/congress.conf",
+    "command": "congress-server --datasources --node-id=data-node --config-file /etc/congress/congress.conf",
     "config_files": [
         {
             "source": "{{ container_config_directory }}/congress.conf",

ansible/roles/congress/templates/congress-policy-engine.json.j2

 {
-    "command": "congress-server --policy_engine --node_id=policy-node --config-file /etc/congress/congress.conf",
+    "command": "congress-server --policy-engine --node-id=policy-node --config-file /etc/congress/congress.conf",
     "config_files": [
         {
             "source": "{{ container_config_directory }}/congress.conf",