tempest_plugin: drop telemetry decorator

Since [1], 'telemetry' service does not exist and Tempest plugin is now
broken:

InvalidServiceTag: Invalid service tag
Details: telemetry is not a valid service

This patch update the test_object_storage_telemetry_middleware test to
match with the Tempest cleanup.

[1] https://github.com/openstack/tempest/commit/e4796f8de446aaaafa83902d1fb2d613331436cf

Change-Id: I2ae71b722826a4e377a4926c943d1dbce3b1ed9f
(cherry picked from commit aa32401c32ab41ec202ab8a440e22046e8c827c4)
1 file changed
tree: 34a5b21a3d95d2160f975d0274f4bfacb99f0e63
  1. ceilometer/