Accept multiple parameters for parameterized tests

Previously Atest only splits test name and methods with comma, which
leads unexpected parsing result when giving is multiple parameters like
    test_method1[[2,3],15],test_method2[2,3],test_method[0]
This change resolves the parsing problem.

Bug: 260183137
Test: atest com.google.android.camera.pts.MultiCamera2022Test#testBasicPhysicalCameraPairConcurrentStreaming[[2,3],37]
Change-Id: Iccbd8dc3fb4a3093e248e22d122a72c91a535c7c
3 files changed