setup file names separately

Author: DifferentialOrange

.github/workflows/testing.yml

@@ -144,6 +144,10 @@ jobs:
             python: '3.10'
             msgpack-deps: 'msgpack==1.0.0'
 
+        env:
+          TEST_TARANTOOL_PID_FILE: tarantool.pid
+          TEST_TARANTOOL_LOG_FILE: tarantool.log
+
     steps:
       - name: Clone the connector
         uses: actions/checkout@v2
@@ -191,10 +195,10 @@ jobs:
       - name: Setup test tarantool instance
         shell: wsl-bash_Ubuntu-20.04 {0}
         run: |
-          rm -f ./tarantool.pid ./tarantool.log
-          TNT_PID=$(tarantool ./test/suites/lib/tarantool_python_ci.lua > tarantool.log 2>&1 & echo $!)
-          touch tarantool.pid
-          echo $TNT_PID > ./tarantool.pid
+          rm -f $TEST_TARANTOOL_PID_FILE $TEST_TARANTOOL_LOG_FILE
+          TNT_PID=$(tarantool ./test/suites/lib/tarantool_python_ci.lua > $TEST_TARANTOOL_LOG_FILE 2>&1 & echo $!)
+          touch $TEST_TARANTOOL_PID_FILE
+          echo $TNT_PID > $TEST_TARANTOOL_PID_FILE
 
       - name: Run tests
         env:
@@ -206,5 +210,5 @@ jobs:
         if: ${{ always() }}
         shell: wsl-bash_Ubuntu-20.04 {0}
         run: |
-          cat tarantool.log || true
-          kill $(cat tarantool.pid) || true
+          cat $TEST_TARANTOOL_LOG_FILE || true
+          kill $(cat $TEST_TARANTOOL_PID_FILE) || true