Temp: add more logging to test_standalone.py

(cherry picked from commit d14cdcb)

Author: steve-s

graalpython/com.oracle.graal.python.test/src/tests/test_standalone.py

@@ -47,6 +47,7 @@
 MVN_CMD = [shutil.which('mvn')]
 
 def run_cmd(cmd, env, cwd=None):
+    print(f"Executing:\n    {cmd=}\n    {env=}\n    {cwd=}")
     process = subprocess.Popen(cmd, env=env, cwd=cwd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, universal_newlines=True, text=True)
     out = []
     for line in iter(process.stdout.readline, ""):

graalpython/lib-graalpython/modules/standalone/app/graalpy.sh

@@ -17,4 +17,5 @@ for var in "$@"; do
 done
 
 export GRAAL_PYTHON_ARGS=$args
+echo graalpy.sh is going to execute: mvn -f "${location}/pom.xml" exec:exec -Dexec.executable=java -Dexec.args="--module-path %classpath '-Dorg.graalvm.launcher.executablename=$0' --module org.graalvm.py.launcher/com.oracle.graal.python.shell.GraalPythonMain"
 mvn -f "${location}/pom.xml" exec:exec -Dexec.executable=java -Dexec.args="--module-path %classpath '-Dorg.graalvm.launcher.executablename=$0' --module org.graalvm.py.launcher/com.oracle.graal.python.shell.GraalPythonMain"