Add tempest_ext.conf file
diff --git a/tempest/tempest_ext.conf b/tempest/tempest_ext.conf
new file mode 100644
index 0000000..7e64de6
--- /dev/null
+++ b/tempest/tempest_ext.conf
@@ -0,0 +1,57 @@
+[compute]
+image_ref_alt = ${IMAGE_REF2}
+min_microversion = 2.1
+max_microversion = latest
+min_compute_nodes = 3
+endpoint_type = publicURL
+ping_timeout = 20
+ping_count = 5
+ssh_timeout = 90
+ssh_channel_timeout = 100
+build_timeout = 120
+
+[compute-feature-enabled]
+live_migration = True
+nova_cert = True
+
+[identity]
+auth_version = v3
+v3_endpoint_type = publicURL
+endpoint_type = publicURL
+
+[image]
+build_timeout = 130
+endpoint_type = publicURL
+
+[image-feature-enabled]
+api_v1 = False
+
+[network]
+build_timeout = 120
+endpoint_type = publicURL
+
+[validation]
+image_ssh_password = cubswin:)
+ssh_timeout = 130
+
+[object-storage]
+container_sync_timeout = 120
+endpoint_type = publicURL
+
+[object-storage-feature-enabled]
+#for ceph
+discoverability = false
+
+[orchestration]
+max_template_size = 5440000
+max_resources_per_stack = 20000
+endpoint_type = publicURL
+
+[volume]
+storage_protocol = ceph
+endpoint_type = publicURL
+
+[volume-feature-enabled]
+api_v3 = true
+manage_snapshot = true
+backup = False