Fix CI failure caused by nebula-python folder (#328)

Force to merge because the issue cannot be fixed before CI passes

.github/workflows/pull_request.yml

@@ -132,4 +132,4 @@ jobs:
         timeout-minutes: 25
       - name: Cleanup
         if: ${{ always() }}
-        run: rm -rf "${{ github.workspace }}"
+        run: rm -rf build modules

ci/test.sh

@@ -15,8 +15,10 @@ mkdir -p $BUILD_DIR
 
 function get_py_client() {
     git clone -b v2.0 https://github.com/vesoft-inc/nebula-python.git
-    cd nebula-python
+    pushd nebula-python
     python3 setup.py install --user
+    popd
+    rm -rf nebula-python
 }
 
 function prepare() {

nebula-python @ 7dc78785

-Subproject commit 7dc78785b7f3d69091711e0e8f63c3bdec39d6c1