lua_factory: Support for HTTP POST Request

Some APIs have more then GET endopoints and now Grilo Plugins is able to
create a POST request to deal with those endpoints in order to fetch
data.
1 job for lua_http_post_function in 3 minutes and 56 seconds (queued for 8 minutes and 22 seconds)
latest
Status Job ID Name Coverage
  Test
passed #115361
build_stable

00:03:56