fixed go not found and a check if the mailcatcher service exists, also clean up the go download tarball after install
fixed go not found and a check if the mailcatcher service exists, also clean up the go download tarball after install

DrewAPicture/varying-vagrant-vagrants,trepmal/varying-vagrant-vagrants,Varying-Vagrant-Vagrants/VVV,Varying-Vagrant-Vagrants/VVV,speartail/VVV,saucal/VVV,clreed87/VVV,trepmal/varying-vagrant-vagrants,saucal/VVV,saucal/VVV,speartail/VVV,DrewAPicture/varying-vagrant-vagrants,Varying-Vagrant-Vagrants/VVV,clreed87/VVV