HTTPCLIENT-1405: CONNECT HTTP/1.1 requests lack mandatory 'Host' header

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1528325 13f79535-47bb-0310-9956-ffa450edef68
Removed unnecessary protocol interceptor from the proxy protocol processor

git-svn-id: https://svn.apache.org/repos/asf/httpcomponents/httpclient/trunk@1528327 13f79535-47bb-0310-9956-ffa450edef68