Update kepler version and container template

Update kepler image default version to v0.10.2.

The new kepler (starting from 0.10) has completely different set of
config options so kepler's template was updated correspondingly.

- 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.

Also changed kepler healthcheck script:
- 'healthz' URL path no longer exist, so use 'metrics' instead.
- Fetch only headers and status code for healthcheck in order to
  minimize load.

Author: rsafrono

roles/edpm_telemetry_power_monitoring/defaults/main.yml

@@ -38,7 +38,7 @@ edpm_telemetry_image_download_retries: "{{ edpm_download_retries | default(5) }}
 edpm_telemetry_old_tripleo_compute_sevices:
   - tripleo_ceilometer_agent_ipmi.service
 # Image to use for kepler
-edpm_telemetry_kepler_image: "quay.io/sustainable_computing_io/kepler:release-0.7.12"
+edpm_telemetry_kepler_image: "quay.io/sustainable_computing_io/kepler:v0.10.2"
 # Instruction for distribution of container health check scripts
 edpm_telemetry_power_monitoring_healthcheck_sources:
   ceilometer_agent_ipmi: ceilometer_agent

roles/edpm_telemetry_power_monitoring/files/healthchecks/exporter/healthcheck

@@ -15,11 +15,11 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-URL="http://0.0.0.0:8888/healthz"
+URL="http://0.0.0.0:8888/metrics"
 TIMEOUT=5 # Timeout in seconds
 
 # Get the HTTP status code and response body using curl
-RESPONSE=$(curl -s -w "%{http_code}" $URL --max-time $TIMEOUT)
+RESPONSE=$(curl -I -s -w "%{http_code}" $URL --max-time $TIMEOUT)
 BODY=${RESPONSE:0:-3}  # Extract the body (all but the last 3 characters)
 HTTP_CODE=${RESPONSE: -3}  # Extract the last 3 characters as the HTTP status code
 

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",