ci: add check for tarantool-python connector

This patch extends the 'integration.yml' workflow and adds a new
workflow call for running tests to verify integration between tarantool
and tarantool-python connector.

Author: ylobankov

.github/workflows/integration.yml

@@ -64,3 +64,9 @@ jobs:
     uses: tarantool/mysql/.github/workflows/reusable_testing.yml@master
     with:
       artifact_name: tarantool-ubuntu-focal-${{ github.sha }}
+
+  tarantool-python:
+    needs: tarantool
+    uses: tarantool/tarantool-python/.github/workflows/reusable_testing.yml@ylobankov/add-reusable-testing-workflow
+    with:
+      artifact_name: tarantool-ubuntu-focal-${{ github.sha }}