Update the --openjdk_testrepo arg name in runAqaArgParse.py

[JeromeJu]

Describe the bug
In the runAqaArgParse.py file, the --openjdk_testrepo arg name should be updated to --aqa-testrepo

Expected behavior
The run-aqa should later take in --aqa-testrepo arg

[JeromeJu]

Hi, I was investigating the effect of the one-liner in #298 via the [similar workflow] (https://github.com/JeromeJu/TKG/runs/5554345670?check_suite_focus=true) as #297 in my forked TKG repo PR.

TODO：

• Use echos to check if in the correct repo

usage: run aqa [--help]
 [--sdk_resource {nightly,releases,customized,build-jdk} [{nightly,releases,customized,build-jdk} ...]]
 [--build_repo BUILD_REPO [BUILD_REPO ...]]
 [--customized_sdk_url CUSTOMIZED_SDK_URL [CUSTOMIZED_SDK_URL ...]]
 [--archive_extension {.zip,.tar,.7z} [{.zip,.tar,.7z} ...]]
 [--build_list {openjdk,functional,system,perf,external} [{openjdk,functional,system,perf,external} ...]]
 [--target TARGET [TARGET ...]]
 [--platform PLATFORM [PLATFORM ...]]
 [--jdk_version JDK_VERSION [JDK_VERSION ...]]
 [--jdk_impl {hotspot,openj9} [{hotspot,openj9} ...]]
 [--openjdk_testrepo OPENJDK_TESTREPO [OPENJDK_TESTREPO ...]]
 [--openj9_repo OPENJ9_REPO [OPENJ9_REPO ...]]
 [--tkg_repo TKG_REPO [TKG_REPO ...]]
 [--workflow_repo WORKFLOW_REPO [WORKFLOW_REPO ...]]
run aqa: error: unrecognized arguments: --aqatest_repo adoptium/aqa-tests:master

[JeromeJu]

I checked again to make sure the checked out repo is the intended one. However, it still would not bring the correct output. As suggested from last meeting, shall we try merging this one-liner?