Remove default values for target node.

Related-PROD: PROD-21848

* We have to remove default value _param:cid03
because in case of openstack only installation we are
not able to add validate job.

Change-Id: Iee8a2b59b7fd17779e7b8906e2d8cb3e40634e6a
diff --git a/jenkins/client/job/validate.yml b/jenkins/client/job/validate.yml
index 207296b..d1638a6 100644
--- a/jenkins/client/job/validate.yml
+++ b/jenkins/client/job/validate.yml
@@ -246,7 +246,7 @@
               description: Docker image to use for running Rally/Tempest
             TARGET_NODE:
               type: string
-              default: "${_param:cicd_control_node03_hostname}.${_param:cluster_domain}"
+              default: ""
               description: Node where container with Tempest will be run
             PROXY:
               type: string
@@ -301,7 +301,7 @@
               description: Credentials to the Salt API
             TEMPEST_TARGET_NODE:
               type: string
-              default: "${_param:cicd_control_node03_hostname}.${_param:cluster_domain}"
+              default: ""
               description: Node where container with tempest will be run
             TEST_IMAGE:
               type: string
@@ -381,7 +381,7 @@
               description: Credentials to the Salt API
             TARGET_NODE:
               type: string
-              default: "${_param:cicd_control_node03_hostname}.${_param:cluster_domain}"
+              default: ""
               description: Node where docker container with Rally will be run
             TOOLS_REPO:
               type: string