Fix tabs in api/base

Wrong indentation in api/base.py

TrivialFix

Change-Id: I7a57db4f33ff0df6df2fb6a653f48ee9645b3275
diff --git a/manila_tempest_tests/tests/api/base.py b/manila_tempest_tests/tests/api/base.py
index d8bd45a..2f896ec 100644
--- a/manila_tempest_tests/tests/api/base.py
+++ b/manila_tempest_tests/tests/api/base.py
@@ -991,8 +991,8 @@
                         client.wait_for_resource_deletion(snapshot_id=res_id)
                     elif (res["type"] is "share_network" and
                             res_id != CONF.share.share_network_id):
-                            client.delete_share_network(res_id)
-                            client.wait_for_resource_deletion(sn_id=res_id)
+                        client.delete_share_network(res_id)
+                        client.wait_for_resource_deletion(sn_id=res_id)
                     elif res["type"] is "security_service":
                         client.delete_security_service(res_id)
                         client.wait_for_resource_deletion(ss_id=res_id)