Update kepler container template

New kepler (starting from 0.10) has completely different set of
config options.

- Removed '-v' option as it's no longer supported.
- Added option --web.listen-address=:8888 as kepler no longer runs
  on port 8888 by default.
- There is no longer need to specify desired metrics using
  environment variables as all metrics are enabled by default.

Author: rsafrono

roles/edpm_telemetry_power_monitoring/templates/kepler.json.j2

@@ -4,16 +4,8 @@
     "restart": "always",
     "ports": ["8888:8888"],
     "net": "host",
-    "command": "-v=2",
+    "command": "--web.listen-address=:8888",
     "recreate": true,
-    "environment": {
-        "ENABLE_GPU": "true",
-        "EXPOSE_CONTAINER_METRICS": "true",
-        "ENABLE_PROCESS_METRICS": "true",
-        "EXPOSE_VM_METRICS": "true",
-        "EXPOSE_ESTIMATED_IDLE_POWER_METRICS": "false",
-        "LIBVIRT_METADATA_URI": "http://openstack.org/xmlns/libvirt/nova/1.1"
-    },
 {% if edpm_telemetry_power_monitoring_healthcheck %}
     "healthcheck": {
         "test": "/openstack/healthcheck kepler",