Enhancement 4.2 - Http output plugin

[eschabell]

HTTP Output: Added PUT method support

[eschabell]

Researched this plugin and fixed a few things to update the entire plugin doc:

• added 3 missing options: http.response_timeout, http.read_idle_timeout, aws_profile
• fixed 1 incorrect default: format default should be json, not msgpack
• added 2 missing compression options: snappy and zstd for the compress parameter
• fixed parameter name casing inconsistencies in documentation
• added PUT method docs and example