add paths to integration tests

Author: robertbrignull

tests/multi-language-repo/.github/codeql/custom-queries.yml

@@ -26,4 +26,11 @@ queries:
   - name: Javascript queries 
     uses: Anthophila/javascript-querypack/show_ifs2.ql@master
   - name: Python queries 
-    uses: Anthophila/python-querypack/show_ifs2.ql@second-branch 
+    uses: Anthophila/python-querypack/show_ifs2.ql@second-branch 
+
+# These paths are to test handling of different forms and that they don't cause errors.
+# Many of these files won't exist, or would be analysed anyway so the path is unnecessary.
+paths:
+  - /
+paths-ignore:
+  - "**/excluded/**"