Install wpcli doctor package, fix #2051
Install wpcli doctor package, fix #2051

Ref: https://github.com/Varying-Vagrant-Vagrants/VVV/issues/2051
saucal/VVV,saucal/VVV,trepmal/varying-vagrant-vagrants,Varying-Vagrant-Vagrants/VVV,Varying-Vagrant-Vagrants/VVV,saucal/VVV,Varying-Vagrant-Vagrants/VVV,trepmal/varying-vagrant-vagrants