Add kong v0.11 compatiblity

[php-cpm]

as the README wroten,we shall support the v0.11 version of kong

[pantsel]

Hi @php-cpm , Konga is already compatible with kong 0.11.x since v0.8.3 without the need of those addittions because the only thing that changes is the default value of http_if_terminated.

This is handled in code.
Check assets/js/app/apis/apis-service.js:53.

// Kong 0.11.x fix
if(Semver.cmp(version,"0.11.0") >= 0 && props.http_if_terminated !== undefined){
   props.http_if_terminated = false;
}