ZAPI-285: Fix heartbeater methods to be part of the Heartbeater object
ZAPI-285: Fix heartbeater methods to be part of the Heartbeater object

arekinath/sdc-vmapi,joyent/sdc-vmapi,misterdjules/sdc-vmapi,joyent/sdc-vmapi,richardkiene/sdc-vmapi,misterdjules/sdc-vmapi,richardkiene/sdc-vmapi,arekinath/sdc-vmapi