Use CI variable for project name in Github CI

.github/workflows/ci.yml

@@ -22,7 +22,7 @@ jobs:
         -   name: "Main Script"
             run: |
                 curl -L -O -k https://gitlab.tiker.net/inducer/ci-support/raw/master/prepare-and-run-flake8.sh
-                . ./prepare-and-run-flake8.sh ./pyopencl ./test
+                . ./prepare-and-run-flake8.sh "$(basename $GITHUB_REPOSITORY)" ./test
 
     pytest3:
         name: Pytest on Py3