Stop using deprecated timeutils.total_seconds()
Stop using deprecated timeutils.total_seconds()

This function has been deprecated. It was only useful for Python <= 2.6.

Change-Id: Ic0ca83920e9ed0692277bf5d903d3df91d1adcde

eayunstack/neutron,bigswitch/neutron,igor-toga/local-snat,wolverineav/neutron,bigswitch/neutron,openstack/neutron,MaximNevrov/neutron,sebrandon1/neutron,huntxu/neutron,dims/neutron,apporc/neutron,eayunstack/neutron,mahak/neutron,huntxu/neutron,noironetworks/neutron,igor-toga/local-snat,noironetworks/neutron,mahak/neutron,mahak/neutron,klmitch/neutron,apporc/neutron,openstack/neutron,dims/neutron,klmitch/neutron,sebrandon1/neutron,MaximNevrov/neutron,openstack/neutron,cloudbase/neutron,wolverineav/neutron,cloudbase/neutron