autoscaling: Remove usage of deprecated Ceilometer API

This removes usage of deprecated Ceilometer API from the hot tempaltes
Marks as deprecated the cfn template.

This doesn't update the openshift, mistral, senlin
autoscaling/autohealing templates. Mainly because I don't have the
knowledge to change where the custom metrics are send from
Ceilometer-API to Gnocchi API.

Change-Id: I4a617daf063fb1faf01c71762d6509cb00eed0b6

cfn/F17/AutoScalingCeilometer.yaml

@@ -1,5 +1,5 @@
 HeatTemplateFormatVersion: '2012-12-12'
-Description: Creates an autoscaling wordpress application using Ceilometer.
+Description: Creates an autoscaling wordpress application using deprecated Ceilometer API.
 Parameters:
   KeyName:
     Description: Name of an existing EC2 KeyPair to enable SSH access to the instances

hot/autoscaling.yaml

@@ -114,31 +114,45 @@ resources:
       cooldown: 60
       scaling_adjustment: -1
   cpu_alarm_high:
-    type: OS::Ceilometer::Alarm
+    type: OS::Aodh::GnocchiAggregationByResourcesAlarm
     properties:
-      description: Scale-up if the average CPU > 50% for 1 minute
-      meter_name: cpu_util
-      statistic: avg
-      period: 60
+      description: Scale up if CPU > 80%
+      metric: cpu_util
+      aggregation_method: mean
+      granularity: 300
       evaluation_periods: 1
-      threshold: 50
-      alarm_actions:
-        - {get_attr: [web_server_scaleup_policy, alarm_url]}
-      matching_metadata: {'metadata.user_metadata.stack': {get_param: "OS::stack_id"}}
+      threshold: 80
+      resource_type: instance
       comparison_operator: gt
+      alarm_actions:
+        - str_replace:
+            template: trust+url
+            params:
+              url: {get_attr: [scaleup_policy, signal_url]}
+      query:
+        list_join:
+          - ''
+          - - {'=': {server_group: {get_param: "OS::stack_id"}}}
   cpu_alarm_low:
-    type: OS::Ceilometer::Alarm
+    type: OS::Aodh::GnocchiAggregationByResourcesAlarm
     properties:
-      description: Scale-down if the average CPU < 15% for 10 minutes
-      meter_name: cpu_util
-      statistic: avg
-      period: 600
+      description: Scale down if CPU < 15% for 5 minutes
+      metric: cpu_util
+      aggregation_method: mean
+      granularity: 300
       evaluation_periods: 1
       threshold: 15
-      alarm_actions:
-        - {get_attr: [web_server_scaledown_policy, alarm_url]}
-      matching_metadata: {'metadata.user_metadata.stack': {get_param: "OS::stack_id"}}
+      resource_type: instance
       comparison_operator: lt
+      alarm_actions:
+        - str_replace:
+            template: trust+url
+            params:
+              url: {get_attr: [scaleup_policy, signal_url]}
+      query:
+        list_join:
+          - ''
+          - - {'=': {server_group: {get_param: "OS::stack_id"}}}
   monitor:
     type: OS::Neutron::HealthMonitor
     properties: