Use travis' new build workers.
Use travis' new build workers.

They boot faster and since we don't use sudo we can use them.
ddboline/chardet,memnonila/chardet,barak066/chardet,memnonila/chardet,chardet/chardet,barak066/chardet,asdfsx/chardet,ddboline/chardet,asdfsx/chardet,chardet/chardet