FreeSWITCH-FS-7269

Merging in latest from upstream (FS/freeswitch:refs/heads/master)

* commit 'b60df39b96b05b6c3cf220d5049ea5fc20dfa6e1':
  mod_http_cache: fix configuration so that carriage returns or other whitespace is OK around S3 keys
  mod_http_cache: fixed S3 URL parser to allow mybucketsubdomain.com.s3.amazonaws.com