Remove sudo from generated Vagrantfile
Remove sudo from generated Vagrantfile

This is unneeded because, by default, provisioners run as a privileged
user.

Fixes GH-7295

bdwyertech/vagrant,chrisroberts/vagrant,mwrock/vagrant,lukebakken/vagrant,carlosefr/vagrant,PatrickLang/vagrant,benh57/vagrant,lonniev/vagrant,vamegh/vagrant,mitchellh/vagrant,bshurts/vagrant,jtopper/vagrant,justincampbell/vagrant,taliesins/vagrant,jtopper/vagrant,tomfanning/vagrant,bdwyertech/vagrant,sni/vagrant,bryson/vagrant,marxarelli/vagrant,marxarelli/vagrant,marxarelli/vagrant,chrisroberts/vagrant,krig/vagrant,signed8bit/vagrant,marxarelli/vagrant,sax/vagrant,lukebakken/vagrant,crashlytics/vagrant,taliesins/vagrant,carlosefr/vagrant,gitebra/vagrant,krig/vagrant,bshurts/vagrant,gitebra/vagrant,sax/vagrant,chrisroberts/vagrant,kamazee/vagrant,krig/vagrant,signed8bit/vagrant,chrisroberts/vagrant,sax/vagrant,benizi/vagrant,justincampbell/vagrant,mitchellh/vagrant,justincampbell/vagrant,lukebakken/vagrant,mwrock/vagrant,carlosefr/vagrant,tomfanning/vagrant,vamegh/vagrant,tomfanning/vagrant,crashlytics/vagrant,bryson/vagrant,bshurts/vagrant,vamegh/vagrant,gitebra/vagrant,gitebra/vagrant,signed8bit/vagrant,kamazee/vagrant,lonniev/vagrant,jtopper/vagrant,crashlytics/vagrant,jtopper/vagrant,benizi/vagrant,bdwyertech/vagrant,taliesins/vagrant,lonniev/vagrant,signed8bit/vagrant,lonniev/vagrant,PatrickLang/vagrant,bdwyertech/vagrant,kamazee/vagrant,benh57/vagrant,mwrock/vagrant,mitchellh/vagrant,mwrock/vagrant,lukebakken/vagrant,mitchellh/vagrant,tomfanning/vagrant,bryson/vagrant,bshurts/vagrant,taliesins/vagrant,benizi/vagrant,sni/vagrant,benh57/vagrant,sni/vagrant,justincampbell/vagrant,crashlytics/vagrant,bryson/vagrant,krig/vagrant,sax/vagrant,PatrickLang/vagrant,sni/vagrant,kamazee/vagrant,benh57/vagrant,vamegh/vagrant,benizi/vagrant,carlosefr/vagrant,PatrickLang/vagrant