Logging updates in IptablesFirewallDriver.
Logging updates in IptablesFirewallDriver.

Update IptablesFirewallDriver so that it uses the debug log channel
when logging specifics about each firewall rule.

Fixes LP Bug #969545.

Change-Id: Ie50a3607fff17f032d577af8a87d5f4582bcc919

mandeepdhami/nova,scripnichenko/nova,apporc/nova,vladikr/nova_drafts,kimjaejoong/nova,j-carpentier/nova,JioCloud/nova_test_latest,raildo/nova,belmiromoreira/nova,hanlind/nova,JioCloud/nova,houshengbo/nova_vmware_compute_driver,jianghuaw/nova,sridevikoushik31/openstack,double12gzh/nova,CiscoSystems/nova,klmitch/nova,mahak/nova,devendermishrajio/nova,iuliat/nova,yatinkumbhare/openstack-nova,JioCloud/nova,citrix-openstack-build/nova,paulmathews/nova,NoBodyCam/TftpPxeBootBareMetal,affo/nova,usc-isi/nova,felixma/nova,Triv90/Nova,whitepages/nova,silenceli/nova,usc-isi/nova,akash1808/nova,ruslanloman/nova,usc-isi/extra-specs,JianyuWang/nova,maoy/zknova,silenceli/nova,spring-week-topos/nova-week,bgxavier/nova,mmnelemane/nova,raildo/nova,watonyweng/nova,Juniper/nova,aristanetworks/arista-ovs-nova,plumgrid/plumgrid-nova,mgagne/nova,shahar-stratoscale/nova,maheshp/novatest,dims/nova,varunarya10/nova_test_latest,bclau/nova,Francis-Liu/animated-broccoli,sebrandon1/nova,bgxavier/nova,badock/nova,virtualopensystems/nova,sebrandon1/nova,paulmathews/nova,rahulunair/nova,Yusuke1987/openstack_template,phenoxim/nova,shootstar/novatest,rickerc/nova_audit,sridevikoushik31/openstack,alaski/nova,Metaswitch/calico-nova,eharney/nova,fnordahl/nova,isyippee/nova,Tehsmash/nova,usc-isi/extra-specs,zzicewind/nova,JianyuWang/nova,CiscoSystems/nova,maoy/zknova,takeshineshiro/nova,vladikr/nova_drafts,fajoy/nova,petrutlucian94/nova,fnordahl/nova,tealover/nova,sridevikoushik31/nova,iuliat/nova,leilihh/novaha,hanlind/nova,citrix-openstack-build/nova,plumgrid/plumgrid-nova,yosshy/nova,mgagne/nova,ted-gould/nova,zhimin711/nova,Juniper/nova,eayunstack/nova,devendermishrajio/nova_test_latest,orbitfp7/nova,gooddata/openstack-nova,alexandrucoman/vbox-nova-driver,sacharya/nova,sebrandon1/nova,yrobla/nova,dstroppa/openstack-smartos-nova-grizzly,rrader/nova-docker-plugin,MountainWei/nova,vmturbo/nova,NeCTAR-RC/nova,varunarya10/nova_test_latest,belmiromoreira/nova,CEG-FYP-OpenStack/scheduler,rajalokan/nova,usc-isi/extra-specs,SUSE-Cloud/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,fajoy/nova,barnsnake351/nova,angdraug/nova,scripnichenko/nova,sridevikoushik31/openstack,DirectXMan12/nova-hacking,tudorvio/nova,shail2810/nova,alvarolopez/nova,DirectXMan12/nova-hacking,klmitch/nova,badock/nova,felixma/nova,CloudServer/nova,TwinkleChawla/nova,cloudbase/nova-virtualbox,hanlind/nova,ntt-sic/nova,zaina/nova,Brocade-OpenSource/OpenStack-DNRM-Nova,mikalstill/nova,cernops/nova,nikesh-mahalka/nova,sridevikoushik31/nova,zaina/nova,rrader/nova-docker-plugin,maheshp/novatest,eayunstack/nova,nikesh-mahalka/nova,usc-isi/nova,rahulunair/nova,BeyondTheClouds/nova,cloudbau/nova,viggates/nova,rajalokan/nova,Metaswitch/calico-nova,TieWei/nova,bigswitch/nova,adelina-t/nova,savi-dev/nova,berrange/nova,petrutlucian94/nova,thomasem/nova,ewindisch/nova,NewpTone/stacklab-nova,rajalokan/nova,jeffrey4l/nova,devendermishrajio/nova_test_latest,openstack/nova,cloudbase/nova-virtualbox,paulmathews/nova,saleemjaveds/https-github.com-openstack-nova,Yusuke1987/openstack_template,NewpTone/stacklab-nova,aristanetworks/arista-ovs-nova,cyx1231st/nova,Juniper/nova,projectcalico/calico-nova,psiwczak/openstack,adelina-t/nova,devoid/nova,bclau/nova,mandeepdhami/nova,tangfeixiong/nova,NeCTAR-RC/nova,dstroppa/openstack-smartos-nova-grizzly,alaski/nova,savi-dev/nova,shootstar/novatest,klmitch/nova,NoBodyCam/TftpPxeBootBareMetal,dawnpower/nova,phenoxim/nova,tanglei528/nova,devoid/nova,dawnpower/nova,cloudbase/nova,joker946/nova,tianweizhang/nova,ted-gould/nova,redhat-openstack/nova,gooddata/openstack-nova,BeyondTheClouds/nova,spring-week-topos/nova-week,yatinkumbhare/openstack-nova,virtualopensystems/nova,TwinkleChawla/nova,viggates/nova,sridevikoushik31/nova,DirectXMan12/nova-hacking,apporc/nova,Stavitsky/nova,blueboxgroup/nova,rickerc/nova_audit,eharney/nova,kimjaejoong/nova,BeyondTheClouds/nova,JioCloud/nova_test_latest,fajoy/nova,vmturbo/nova,angdraug/nova,openstack/nova,cloudbau/nova,psiwczak/openstack,double12gzh/nova,whitepages/nova,j-carpentier/nova,devendermishrajio/nova,leilihh/novaha,gooddata/openstack-nova,eonpatapon/nova,mmnelemane/nova,berrange/nova,aristanetworks/arista-ovs-nova,tealover/nova,akash1808/nova,shail2810/nova,Stavitsky/nova,maelnor/nova,josephsuh/extra-specs,josephsuh/extra-specs,ntt-sic/nova,ewindisch/nova,cloudbase/nova,CCI-MOC/nova,vmturbo/nova,bigswitch/nova,mikalstill/nova,dims/nova,leilihh/nova,NewpTone/stacklab-nova,imsplitbit/nova,edulramirez/nova,joker946/nova,sacharya/nova,shahar-stratoscale/nova,cyx1231st/nova,Triv90/Nova,petrutlucian94/nova_dev,openstack/nova,yrobla/nova,orbitfp7/nova,CCI-MOC/nova,noironetworks/nova,mahak/nova,isyippee/nova,gooddata/openstack-nova,affo/nova,rahulunair/nova,zzicewind/nova,houshengbo/nova_vmware_compute_driver,gspilio/nova,LoHChina/nova,tanglei528/nova,cernops/nova,Yuriy-Leonov/nova,Juniper/nova,jianghuaw/nova,takeshineshiro/nova,OpenAcademy-OpenStack/nova-scheduler,akash1808/nova_test_latest,mikalstill/nova,luogangyi/bcec-nova,jianghuaw/nova,LoHChina/nova,cloudbase/nova,thomasem/nova,Yuriy-Leonov/nova,savi-dev/nova,gspilio/nova,josephsuh/extra-specs,watonyweng/nova,zhimin711/nova,eonpatapon/nova,maelnor/nova,qwefi/nova,jeffrey4l/nova,sridevikoushik31/nova,barnsnake351/nova,klmitch/nova,blueboxgroup/nova,vmturbo/nova,ruslanloman/nova,tudorvio/nova,TieWei/nova,tangfeixiong/nova,projectcalico/calico-nova,MountainWei/nova,edulramirez/nova,alexandrucoman/vbox-nova-driver,Tehsmash/nova,noironetworks/nova,NoBodyCam/TftpPxeBootBareMetal,saleemjaveds/https-github.com-openstack-nova,tianweizhang/nova,psiwczak/openstack,gspilio/nova,Triv90/Nova,jianghuaw/nova,OpenAcademy-OpenStack/nova-scheduler,CEG-FYP-OpenStack/scheduler,cernops/nova,akash1808/nova_test_latest,yosshy/nova,CloudServer/nova,Francis-Liu/animated-broccoli,maoy/zknova,dstroppa/openstack-smartos-nova-grizzly,imsplitbit/nova,leilihh/nova,luogangyi/bcec-nova,SUSE-Cloud/nova,maheshp/novatest,qwefi/nova,houshengbo/nova_vmware_compute_driver,petrutlucian94/nova_dev,alvarolopez/nova,redhat-openstack/nova,yrobla/nova,rajalokan/nova,mahak/nova