Be explicit in dependabot file

Author: andrewlock

.github/dependabot.yml

@@ -1,10 +1,11 @@
 version: 2
 updates:
-  # Mocked projects for dependency notifications
+  # Mocked projects for vendored dependency notifications
   - package-ecosystem: "nuget"
     directory: "/tracer/dependabot"
+    exclude-paths: "integrations"
     schedule:
-      interval: "daily"
+      interval: "weekly" # these don't change often
     labels:
       - "dependencies"
       - "area:dependabot"
@@ -15,6 +16,17 @@ updates:
       - dependency-name: "*" # Ignore patches for all integrations
         update-types: ["version-update:semver-patch"]
 
+  # Mocked projects for integration dependency notifications
+  - package-ecosystem: "nuget"
+    directory: "/tracer/dependabot/integrations"
+    schedule:
+      interval: "daily"
+    labels:
+      - "dependencies"
+      - "area:dependabot"
+    reviewers:
+      - "DataDog/apm-idm-dotnet"
+
   # Azure functions explicit testing - we can't include these with our "normal" process checks
   # Because they aren't compatible with the dotnet msbuild approach we're using
   - package-ecosystem: "nuget"