noninteractive-tradefed: change to work with python3

This commit change to use python3 for tradefed-runner.py,
and drop the packages installation as they will be installed
on the Linaro Ubuntu20.04 based docker image side which will have
python3 installed as the default python:
    https://hub.docker.com/r/linaro/lava-android-postprocess
Or the user needs to prepare the packages on the host first.

The background is that, the latest AOSP vts package needs to
have python3.8+ to run the vts_kernel_proc_file_api_test module
after the following commit:
    https://android.googlesource.com/platform/test/vts-testcase/vndk/+/6f09ccb69d553a48dd231635a06889af26ff545f%5E%21/#F3

Otherwise, the following error will be reported:
    07-26 12:45:26 I/ModuleListener: [66/67] cbe37e vts_kernel_proc_file_api_test __main__.VtsKernelProcFileApiTest#test_ProcZoneInfoTest FAILURE: Traceback (most recent call last):
      File "/tmp/Soong.python_p2c4wyvb/vts_kernel_proc_file_api_test.py", line 277, in test
        test_object.set_api_level(self.dut)
      File "/tmp/Soong.python_p2c4wyvb/proc_tests/KernelProcFileTestBase.py", line 140, in set_api_level
        self.api_level = dut.getLaunchApiLevel(strict=False)
      File "/tmp/Soong.python_p2c4wyvb/vts/testcases/vndk/utils.py", line 147, in getLaunchApiLevel
        return self.GetLaunchApiLevel()
      File "/tmp/Soong.python_p2c4wyvb/vts/testcases/vndk/utils.py", line 122, in GetLaunchApiLevel
        level_str = self._GetProp("ro.product.first_api_level")
      File "/tmp/Soong.python_p2c4wyvb/vts/testcases/vndk/utils.py", line 94, in _GetProp
        out, err, return_code = self.Execute("getprop", name)
      File "/tmp/Soong.python_p2c4wyvb/vts/testcases/vndk/utils.py", line 68, in Execute
        cmd = ["adb", "-s", self._serial_number, "shell", shlex.join(args)]
    AttributeError: module 'shlex' has no attribute 'join'

Signed-off-by: Yongqin Liu <yongqin.liu@linaro.org>

Author: liuyq

automated/android/noninteractive-tradefed/setup.sh

@@ -5,22 +5,15 @@
 . ../../lib/sh-test-lib
 . ../../lib/android-test-lib
 
-JDK="openjdk-11-jdk-headless"
 java_path="/usr/lib/jvm/java-11-openjdk-amd64/bin/java"
 if [ -n "${ANDROID_VERSION}" ] && echo "${ANDROID_VERSION}" | grep -q  "aosp-android14"; then
     # use openjdk-17 for Android14+ versions
-    JDK="openjdk-17-jdk-headless"
     java_path="/usr/lib/jvm/java-17-openjdk-amd64/bin/java"
 fi
 
-PKG_DEPS="coreutils usbutils curl wget zip xz-utils python-lxml python-setuptools python-pexpect aapt lib32z1-dev libc6-dev-i386 lib32gcc1 libc6:i386 libstdc++6:i386 libgcc1:i386 zlib1g:i386 libncurses5:i386 python-dev python-protobuf protobuf-compiler python-virtualenv python-pip python-pexpect psmisc"
-
 dist_name
 case "${dist}" in
     ubuntu)
-        dpkg --add-architecture i386
-        apt-get update -q
-        install_deps "${PKG_DEPS} ${JDK}"
         # make sure to use the right java version
         update-alternatives --set java ${java_path}
         ;;

automated/android/noninteractive-tradefed/tradefed-runner.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 import datetime
 import os
@@ -27,7 +27,7 @@
 
 def result_parser(xml_file, result_format):
     etree_file = open(xml_file, "rb")
-    etree_content = etree_file.read()
+    etree_content = etree_file.read().decode("utf-8")
     rx = re.compile("&#([0-9]+);|&#x([0-9a-fA-F]+);")
     endpos = len(etree_content)
     pos = 0

automated/android/noninteractive-tradefed/tradefed.yaml

@@ -14,7 +14,6 @@ metadata:
         - functional
 
 params:
-    SKIP_INSTALL: "false"
     # Specify timeout in seconds for wait_boot_completed and wait_homescreen.
     TIMEOUT: "300"
     # Download CTS package or copy it from local disk.