[COOK-1844] Make service name configurable.
[COOK-1844] Make service name configurable.

pronix/postgresql,Unholster/postgresql,Unholster/postgresql,patcon/postgresql,rastasheep/postgresql,NREL-cookbooks/postgresql,DonorsChoose/chef-postgresql,jharveysmith/postgresql,dguenms/postgresql,patcon/postgresql,thomas88/postgresql,pronix/postgresql,wearefuturegov/postgresql,livepy/postgresql,h4ck3rm1k3/postgresql,clearstorydata/chef-postgresql,jayceeb/chef-postgresql,conjurinc/postgresql,sous-chefs/postgresql,wearefuturegov/postgresql,CloCkWeRX/postgresql,sous-chefs/postgresql,GitBytes/postgresql,hw-cookbooks/postgresql,ozzyogkush/postgresql,dguenms/postgresql,chiemi627/postgresql,ozzyogkush/postgresql,eheydrick/postgresql,inetsys/postgresql,inetsys/postgresql,dwashko/chef-postgresql,clearstorydata/chef-postgresql,imtapps-cookbooks/postgresql,chiemi627/postgresql,yakara-ltd/postgresql,hw-cookbooks/postgresql,DonorsChoose/chef-postgresql,rastasheep/postgresql,dwashko/chef-postgresql,gsaslis/postgresql,conjurinc/postgresql,gsaslis/postgresql,NREL-cookbooks/postgresql,GitBytes/postgresql,yakara-ltd/postgresql,livepy/postgresql,h4ck3rm1k3/postgresql,eheydrick/postgresql,clearstorydata/chef-postgresql,jayceeb/chef-postgresql