do not enable nova volumes api service by default
do not enable nova volumes api service by default

In folsom, the modules are using cinder. This commit
is part of the deprecation of nova volumes.

datacentred/puppet-nova,ody/puppet-nova,stratustech/puppet-nova,javiplx/puppet-nova,nhinds/puppet-nova,DylanYu/puppet-nova,ody/puppet-nova,pllopis/puppet-nova,apenney/puppet-nova,dprince/puppet-nova,varunarya10/puppet-nova,datacentred/puppet-nova,apenney/puppet-nova,DarkHorseComics/puppet-nova,aquto/puppet-nova,gwdg/puppet-nova,stratustech/puppet-nova,varunarya10/puppet-nova,TelekomCloud/puppet-nova,balle/puppet-nova,nhinds/puppet-nova,JioCloud/puppet-nova,esteve/puppet-nova,mgagne/puppet-nova,larsks/puppet-nova,gwdg/puppet-nova,dprince/puppet-nova,aimonb/puppet-nova,mgagne/puppet-nova,JioCloud/puppet-nova,esteve/puppet-nova,aimonb/puppet-nova,mgagne/puppet-nova,balle/puppet-nova,aimonb/puppet-nova,arnaudmorinol/puppet-nova,madkiss/puppet-nova,aquto/puppet-nova,cristifalcas/puppet-nova