Use format to convert ints to strings
Use format to convert ints to strings

This ensures that on 32bit architectures, where
sometimes an implicit long is created, the resulting
string does not contain a 'L' suffix as generated
by the hex function.

Change-Id: I264f90d68009963fe7a217c2170e1cf2f46ae2bb
Closes-Bug: 1501703

mahak/neutron,jumpojoy/neutron,yanheven/neutron,chitr/neutron,wolverineav/neutron,MaximNevrov/neutron,dims/neutron,apporc/neutron,sebrandon1/neutron,openstack/neutron,bigswitch/neutron,eayunstack/neutron,asgard-lab/neutron,igor-toga/local-snat,glove747/liberty-neutron,noironetworks/neutron,yanheven/neutron,cloudbase/neutron,asgard-lab/neutron,dims/neutron,igor-toga/local-snat,chitr/neutron,cloudbase/neutron,sebrandon1/neutron,openstack/neutron,apporc/neutron,wolverineav/neutron,noironetworks/neutron,MaximNevrov/neutron,jumpojoy/neutron,huntxu/neutron,klmitch/neutron,huntxu/neutron,eayunstack/neutron,klmitch/neutron,glove747/liberty-neutron,mahak/neutron,openstack/neutron,bigswitch/neutron,mahak/neutron