Add ecce-nightly to detectors.yaml

diff --git a/detectors.yaml b/detectors.yaml
index ad34c75..3027205 100644
--- a/detectors.yaml
+++ b/detectors.yaml
@@ -32,3 +32,9 @@ detectors:
       ip:
         config: ip6
         version: master
+  ecce:
+    nightly:
+      version: master
+      ip:
+        config: ip6
+        version: master