Migrate scenario tests ssh-auth-strategy

Migrate the scenario tests to the new ssh-auth-strategy.

Partially implements: blueprint ssh-auth-strategy

Change-Id: I50759d32e47d975ec64ca129a13b2ae4459917e4
diff --git a/tempest/scenario/test_volume_boot_pattern.py b/tempest/scenario/test_volume_boot_pattern.py
index 96e79e6..81ecda0 100644
--- a/tempest/scenario/test_volume_boot_pattern.py
+++ b/tempest/scenario/test_volume_boot_pattern.py
@@ -69,7 +69,10 @@
                 {'name': security_group['name']}]
         create_kwargs.update(self._get_bdm(
             vol_id, delete_on_termination=delete_on_termination))
-        return self.create_server(image='', create_kwargs=create_kwargs)
+        return self.create_server(
+            image='',
+            wait_until='ACTIVE',
+            **create_kwargs)
 
     def _create_snapshot_from_volume(self, vol_id):
         snap_name = data_utils.rand_name('snapshot')
@@ -158,7 +161,8 @@
         self._delete_server(instance)
 
         # boot instance from EBS image
-        instance = self.create_server(image=image['id'])
+        instance = self.create_server(
+            image_id=image['id'])
         # just ensure that instance booted
 
         # delete instance