Adds 'spread' and 'stddev' InfluxQL function as allowed functions in the alerts specification

src/service/clmcservice/alertsapi/alerts_specification_schema.py

@@ -45,7 +45,7 @@ SFEMC = "flame_sfemc"  # describes the keyword used for the SFEMC alert handler
 
 # Influx QL functions defined in the documentation https://docs.influxdata.com/influxdb/v1.6/query_language/functions/
 INFLUX_QL_FUNCTIONS = (
-    "count", "mean", "median", "mode", "sum", "first", "last", "max", "min"
+    "count", "mean", "median", "mode", "sum", "first", "last", "max", "min", "spread", "stddev"
 )
 
 # Kapacitor Tick Script template IDs

src/service/resources/tosca/test-data/clmc-validator/valid/alerts_test_config-3.yaml

@@ -40,7 +40,7 @@ topology_template:
             condition:
               threshold: 5
               granularity: 60
-              aggregation_method: first
+              aggregation_method: spread
               resource_type:
                 flame_sfp: storage
                 flame_sf: storage-users

src/service/resources/tosca/test-data/clmc-validator/valid/alerts_test_config-4.yaml

@@ -41,7 +41,7 @@ topology_template:
             condition:
               threshold: 5
               granularity: 60
-              aggregation_method: first
+              aggregation_method: stddev
               # resource type missing - optional, so it is valid
               comparison_operator: lte
             action: