ISTWCMS-7160: update run groups script to kill and restart chrome driver on every group run

run_groups.sh

@@ -48,5 +48,7 @@ echo "************************************"
 
 # Perform the tests using the groups
 for value in "${unique_values[@]}"; do
+  pgrep chrome | xargs kill -9
+  chromedriver --port=9515 --url-base=/wd/hub &
   php vendor/bin/codecept run acceptance --fail-fast -g "$value"
 done