Add graphviz to the build requirements
Add graphviz to the build requirements

(for /usr/bin/dot)
phusion/passenger,phusion/passenger,jawj/passenger,cgvarela/passenger,cgvarela/passenger,gravitystorm/passenger,openSUSE/passenger,antek-drzewiecki/passenger,phusion/passenger,cgvarela/passenger,cgvarela/passenger,phusion/passenger,pkmiec/passenger,phusion/passenger,jawj/passenger,openSUSE/passenger,kewaunited/passenger,cgvarela/passenger,clemensg/passenger,gravitystorm/passenger,openSUSE/passenger,kewaunited/passenger,jawj/passenger,erikogan/passenger,bf4/passenger,gravitystorm/passenger,clemensg/passenger,phusion/passenger,antek-drzewiecki/passenger,jawj/passenger,openSUSE/passenger,erikogan/passenger,jawj/passenger,kewaunited/passenger,erikogan/passenger,antek-drzewiecki/passenger,bf4/passenger,pkmiec/passenger,clemensg/passenger,gravitystorm/passenger,phusion/passenger,phusion/passenger,bf4/passenger,antek-drzewiecki/passenger,bf4/passenger,bf4/passenger,erikogan/passenger,clemensg/passenger,kewaunited/passenger,antek-drzewiecki/passenger,openSUSE/passenger,clemensg/passenger,cgvarela/passenger,pkmiec/passenger,cgvarela/passenger,kewaunited/passenger,erikogan/passenger,gravitystorm/passenger,pkmiec/passenger,openSUSE/passenger,kewaunited/passenger,antek-drzewiecki/passenger,clemensg/passenger,clemensg/passenger,jawj/passenger,bf4/passenger,jawj/passenger,cgvarela/passenger,pkmiec/passenger,pkmiec/passenger,clemensg/passenger,pkmiec/passenger,erikogan/passenger,bf4/passenger,gravitystorm/passenger,antek-drzewiecki/passenger,kewaunited/passenger,kewaunited/passenger,antek-drzewiecki/passenger