Resolve "Add ecce-nightly to detectors.yaml"

detectors.yaml

@@ -16,13 +16,11 @@ detectors:
         config: ip6
         version: v1.0.0
     deathvalley:
-      default: true
       version: deathvalley-v1.1
       ip:
         config: ip6
         version: v1.1.0
     deathvalley-1.5T:
-      default: true
       version: deathvalley-v1.0-1.5T
       ip:
         config: ip6
@@ -32,3 +30,10 @@ detectors:
       ip:
         config: ip6
         version: master
+  ecce:
+    nightly:
+      default: true
+      version: master
+      ip:
+        config: ip6
+        version: master