Remove redundant parameters for server creation

It's unnessesary to specify 'image_id', 'flavor' and 'wait_until'
parameters, since those parameters are already specified in the
common wrapper utility 'create_test_server'.

Change-Id: I9e070fd9122bcb083f1621b82cb1adc502f9986b

tempest/scenario/test_server_basic_ops.py

@@ -45,8 +45,6 @@ class TestServerBasicOps(manager.ScenarioTest):
 
     def setUp(self):
         super(TestServerBasicOps, self).setUp()
-        self.image_ref = CONF.compute.image_ref
-        self.flavor_ref = CONF.compute.flavor_ref
         self.run_ssh = CONF.validation.run_validation
         self.ssh_user = CONF.validation.image_ssh_user
 
@@ -133,8 +131,6 @@ class TestServerBasicOps(manager.ScenarioTest):
         security_group = self._create_security_group()
         self.md = {'meta1': 'data1', 'meta2': 'data2', 'metaN': 'dataN'}
         self.instance = self.create_server(
-            image_id=self.image_ref,
-            flavor=self.flavor_ref,
             key_name=keypair['name'],
             security_groups=[{'name': security_group['name']}],
             config_drive=CONF.compute_feature_enabled.config_drive,

tempest/scenario/test_shelve_instance.py

@@ -55,7 +55,6 @@ class TestShelveInstance(manager.ScenarioTest):
         security_groups = [{'name': security_group['name']}]
 
         server = self.create_server(
-            image_id=CONF.compute.image_ref,
             key_name=keypair['name'],
             security_groups=security_groups,
             volume_backed=boot_from_volume)

tempest/scenario/test_snapshot_pattern.py

@@ -47,7 +47,6 @@ class TestSnapshotPattern(manager.ScenarioTest):
 
         # boot an instance and create a timestamp file in it
         server = self.create_server(
-            image_id=CONF.compute.image_ref,
             key_name=keypair['name'],
             security_groups=[{'name': security_group['name']}])
 

tempest/scenario/test_stamp_pattern.py

@@ -100,7 +100,6 @@ class TestStampPattern(manager.ScenarioTest):
         # boot an instance and create a timestamp file in it
         volume = self.create_volume()
         server = self.create_server(
-            image_id=CONF.compute.image_ref,
             key_name=keypair['name'],
             security_groups=[{'name': security_group['name']}])