QA: test: add stress test script for pause/release

[keqiaozhang]

Signed-off-by: Zhang Keqiao [email protected]

[lgirdwood]

@keqiaozhang can you redo this PR to merge into SOF (as we are deprecating SOFT). They should all go in the test/scripts/ directory. Thanks

[mengdonglin]

@lgirdwood @juimonen Should test scripts under https://github.com/thesofproject/soft/tree/master/test/qa/tests be also moved to SOF repo test/scripts/?
Probably we don't need to keep a QA folder, since all scripts are shared.

[lgirdwood]

@mengdonglin @keqiaozhang yes all qa scripts should go into SOF repo now.