Changes with Apache Traffic Server 7.1.7
  #4508 - Add logic to clean up vios on HttpSM shutdown
  #4859 - cookie remap plugin
  #4882 - Initialize redir_len, compiler warnings
  #4883 - Don't allow the old body to be used when refreshing
  #4884 - Fixes unmatched port when looking up HostDB
  #4896 - [Backport] Manually brought in changes from #4797
  #4951 - Use one setting for H2 consistently for header size limit on H2 connections
  #4959 - Mark H2 connection inactive only if it is NOT shutting down
  #4996 - Avoid ats_malloc in unmarshal
  #4997 - Fix TSHttpTxnEffectiveUrlStringGet to correctly set the port when it …
  #4998 - Cached object's size can be used as content length for 304 response
  #5001 - Manually merging changes from #4442
  #5013 - don't start a new self scheduling config handler on each config reload
  #5027 - Fix an failed assertion in HttpSM::parse_range_and_compare
  #5170 - Revert "Assert if operations on keep_alive_queue and active_queue are…
  #5280 - Fix build issues on modern macOS for LuaJIT
  #5359 - Revert TS-374 to avoid deadlocks
  #5485 - Don't read frames after sending GOAWAY with an error code
  #5532 - Allow number of settings per H2 session to be configurable
  #5788 - Throttling results in tight loop if there are no new connections
  #5790 - ATS 7 back port patch for SM looping issue #5642
  #5791 - This is a backport patch for ATS 7 that fixes issue #5642.
  #5798 - Fix broken template path caused by ba42078 (PR 1468) (Cherry pick 396…
  #5799 - Fix and reenable url_sig Au test.
  #5820 - HTTP/2 rate limiting