Trim request body httpclient resource

[alileza]

Describe the bug
When sending request with payload, httpclient is not trimming the request body, so

server will be able to read this properly

Given "http-cli" send request to "POST /api/v1" with body
        """
myparams=booyah
        """

but not this

Given "http-cli" send request to "POST /api/v1" with body
        """
               myparams=booyah
        """

Expected behavior
those 2 example above should behave the same way