feat: enable host.name detection for ec2 (#382)

Author: kb-newrelic

distributions/nrdot-collector-host/config.yaml

@@ -180,10 +180,7 @@ processors:
   resourcedetection/cloud:
     detectors: ["gcp", "ec2", "azure"]
     timeout: 2s
-    ec2:
-      resource_attributes:
-        host.name:
-          enabled: false
+    override: true
 
   # Gives OTEL_RESOURCE_ATTRIBUTES precedence over other sources.
   # host.id is set from env whenever the collector is orchestrated by NR Agents.

distributions/nrdot-collector-host/test/spec-nightly.yaml

@@ -4,4 +4,5 @@ nightly:
   ec2:
     enabled: true
   testCaseSpecs:
-    - host
+    - host
+    - resourcedetection

distributions/nrdot-collector/config.yaml

@@ -180,10 +180,7 @@ processors:
   resourcedetection/cloud:
     detectors: ["gcp", "ec2", "azure"]
     timeout: 2s
-    ec2:
-      resource_attributes:
-        host.name:
-          enabled: false
+    override: true
 
   # Gives OTEL_RESOURCE_ATTRIBUTES precedence over other sources.
   # host.id is set from env whenever the collector is orchestrated by NR Agents.

distributions/nrdot-collector/test/spec-nightly.yaml

@@ -4,4 +4,5 @@ nightly:
   ec2:
     enabled: true
   testCaseSpecs:
-    - host
+    - host
+    - resourcedetection

test/e2e/util/spec/resourcedetection.yaml

@@ -0,0 +1,15 @@
+whereClause:
+  template: "WHERE testKey like '{{ .testKey }}'"
+  vars:
+    - testKey
+
+testCases:
+  resourcedetection/cloud.ec2_host_name:
+    metric:
+      # any metric processed by resourcedetection works
+      name: system.cpu.utilization
+      whereClause: WHERE host.name like 'ip-%'
+    assertions:
+      - aggregationFunction: max
+        comparisonOperator: ">"
+        threshold: 0