(PDB-2783) Revisit command versioning
(PDB-2783) Revisit command versioning

This commit edits the command versioning policy to more closely match the query
versioning policy.

puppetlabs/puppetdb,kbarber/puppetdb,waynr/puppetdb,puppetlabs/puppetdb,kbarber/puppetdb,mullr/puppetdb,puppetlabs/puppetdb,rbrw/puppetdb,rbrw/puppetdb,rbrw/puppetdb,waynr/puppetdb,mullr/puppetdb,waynr/puppetdb,waynr/puppetdb,senior/puppetdb,senior/puppetdb,puppetlabs/puppetdb,mullr/puppetdb,kbarber/puppetdb,rbrw/puppetdb,rbrw/puppetdb,senior/puppetdb,kbarber/puppetdb,mullr/puppetdb,senior/puppetdb,puppetlabs/puppetdb,mullr/puppetdb