Revert "Set contrail-api workers count to 1 by default"

Closes-Bug: PROD-27538 (PROD:27538)

This reverts commit 31d4becfa98c11bbdb77d0c6c9e3d8f95e479d77.

Change-Id: Ib69e1031fa4fe0abcdb0f1434ec1f5b18a3d998c
(cherry picked from commit 4aa58bcf9256b3ec4c9c4ee7bb5f987041c65a56)
diff --git a/opencontrail/control/control4_0.yml b/opencontrail/control/control4_0.yml
index a9d5f22..fe63ec1 100644
--- a/opencontrail/control/control4_0.yml
+++ b/opencontrail/control/control4_0.yml
@@ -16,7 +16,7 @@
     opencontrail_message_queue_password: guest
     opencontrail_controller_image: ${_param:mcp_docker_registry}/opencontrail-${_param:linux_repo_contrail_component}/opencontrail-controller:${_param:opencontrail_docker_image_tag}
     opencontrail_controller_container_name: opencontrail_controller_1
-    opencontrail_api_workers_count: 1
+    opencontrail_api_workers_count: 6
     analytics_vip_address: ${_param:opencontrail_analytics_address}
   opencontrail:
     common: