Merge "Fix the media memeory stress test. The media memory stress test used...

Merge "Fix the media memeory stress test. The media memory stress test used the ps mediaserver to capture the memory usage of mediaserver. As the media.log is enabled recently, when runnign the ps mediaserver, it will show both entries. The fix is simply skip the first two lines and parse the laste output." into jb-mr2-dev