Change log v1.15.4-release

New Features

• Enable GPU acceleration for 10-bit HEVC decoding

Improvements/Bug Fixes

• Transcoder can run without an Nvidia GPU by default for the framerate conversion pipeline

• BugFix: Fix exception in tsmux [LT-4895]

• BugFix: Multiple fixes for TS Muxer

UX/UI Improvements

• Transcoder sends cloud instance ID so the Monitoring Dashboard can distinguish
  between an AMI duplicate and the original instance