Depend on corresponding server in WaitCondition

most of the templates used in scenario tests already do this
to exclude unpredictable (especially in virtualized cloud CI environments)
server boot from the wait condition timeout, however 3 templates
(used in 3 tests) are missing this at the moment.

This patch adds an explicit depends_on on the server that the
WaitCondition is waiting for in all scanario templates that use
WaitConditions.

Related-Issue: PRODX-9014
Change-Id: I43d5b3862970db5217651b570525f696910bf320
(cherry picked from commit 75c76767bfed3cbe1dc4b9943140d9e080652ceb)
(cherry picked from commit c2b7f3a90caf5cb4ac0151550503f03f741da1d5)
diff --git a/heat_tempest_plugin/tests/scenario/templates/test_server_signal.yaml b/heat_tempest_plugin/tests/scenario/templates/test_server_signal.yaml
index a944053..90f1b47 100644
--- a/heat_tempest_plugin/tests/scenario/templates/test_server_signal.yaml
+++ b/heat_tempest_plugin/tests/scenario/templates/test_server_signal.yaml
@@ -104,6 +104,7 @@
 
   wait_condition:
     type: OS::Heat::WaitCondition
+    depends_on: server
     properties:
       handle: {get_resource: wait_handle}
       timeout: {get_param: timeout}
diff --git a/heat_tempest_plugin/tests/scenario/templates/test_volumes_create_from_backup.yaml b/heat_tempest_plugin/tests/scenario/templates/test_volumes_create_from_backup.yaml
index bc288f7..68057f2 100644
--- a/heat_tempest_plugin/tests/scenario/templates/test_volumes_create_from_backup.yaml
+++ b/heat_tempest_plugin/tests/scenario/templates/test_volumes_create_from_backup.yaml
@@ -97,6 +97,7 @@
 
   wait_condition:
     type: AWS::CloudFormation::WaitCondition
+    depends_on: instance
     properties:
       Count: 1
       Handle: { get_resource: wait_handle }
diff --git a/heat_tempest_plugin/tests/scenario/templates/test_volumes_delete_snapshot.yaml b/heat_tempest_plugin/tests/scenario/templates/test_volumes_delete_snapshot.yaml
index b383220..306ddcb 100644
--- a/heat_tempest_plugin/tests/scenario/templates/test_volumes_delete_snapshot.yaml
+++ b/heat_tempest_plugin/tests/scenario/templates/test_volumes_delete_snapshot.yaml
@@ -107,6 +107,7 @@
 
   wait_condition:
     type: AWS::CloudFormation::WaitCondition
+    depends_on: instance
     properties:
       Count: 1
       Handle: { get_resource: wait_handle }