changed hls is live validation to fetch 2 bytes instead of 1 byte, this fixes a bug in wowza returning 0 bytes for 0-0 range (0-0 means from first byte to first byte, which is 1 byte)
Merge pull request #1023 from kaltura/IX-9.14.0-is-live-hls-fix

changed hls is live validation to fetch 2 bytes instead of 1 byte