Presents color contrast in resource usage charts
Presents color contrast in resource usage charts

This makes use of d3.scale.category10() to allocate colors to per tenant
trend lines as opposed to d3.scale.category20().
This makes it easy to distinguish the color rendered for each new tenant as
d3.scale.category10() is a more contrasty.

Closes-Bug: #1243747

Change-Id: I6ac2bcd4fa831944dfb10944eb620d333e1f3644

newrocknj/horizon,BiznetGIO/horizon,promptworks/horizon,NeCTAR-RC/horizon,mdavid/horizon,VaneCloud/horizon,openstack/horizon,bigswitch/horizon,mrunge/horizon_lib,tsufiev/horizon,gerrive/horizon,icloudrnd/automation_tools,eayunstack/horizon,yeming233/horizon,maestro-hybrid-cloud/horizon,mrunge/openstack_horizon,blueboxgroup/horizon,NCI-Cloud/horizon,davidcusatis/horizon,yeming233/horizon,henaras/horizon,watonyweng/horizon,philoniare/horizon,VaneCloud/horizon,karthik-suresh/horizon,Dark-Hacker/horizon,Dark-Hacker/horizon,RudoCris/horizon,Dark-Hacker/horizon,redhat-cip/horizon,promptworks/horizon,NeCTAR-RC/horizon,xinwu/horizon,dan1/horizon-proto,yjxtogo/horizon,mrunge/openstack_horizon,coreycb/horizon,ging/horizon,saydulk/horizon,damien-dg/horizon,wangxiangyu/horizon,Daniex/horizon,gochist/horizon,endorphinl/horizon,karthik-suresh/horizon,CiscoSystems/horizon,dan1/horizon-proto,ging/horizon,takeshineshiro/horizon,nvoron23/avos,Daniex/horizon,yjxtogo/horizon,BiznetGIO/horizon,karthik-suresh/horizon,wolverineav/horizon,bigswitch/horizon,icloudrnd/automation_tools,takeshineshiro/horizon,tellesnobrega/horizon,j4/horizon,ikargis/horizon_fod,Metaswitch/horizon,izadorozhna/dashboard_integration_tests,mdavid/horizon,Metaswitch/horizon,mandeepdhami/horizon,blueboxgroup/horizon,xinwu/horizon,maestro-hybrid-cloud/horizon,endorphinl/horizon,Metaswitch/horizon,philoniare/horizon,RudoCris/horizon,CiscoSystems/horizon,CiscoSystems/avos,FNST-OpenStack/horizon,wangxiangyu/horizon,zouyapeng/horizon,sandvine/horizon,takeshineshiro/horizon,damien-dg/horizon,tellesnobrega/horizon,liyitest/rr,xinwu/horizon,FNST-OpenStack/horizon,blueboxgroup/horizon,CiscoSystems/avos,RudoCris/horizon,xme1226/horizon,maestro-hybrid-cloud/horizon,JioCloud/horizon,liyitest/rr,openstack/horizon,spring-week-topos/horizon-week,django-leonardo/horizon,wolverineav/horizon,NCI-Cloud/horizon,redhat-openstack/horizon,redhat-cip/horizon,JioCloud/horizon,BiznetGIO/horizon,ikargis/horizon_fod,idjaw/horizon,endorphinl/horizon-fork,xinwu/horizon,CiscoSystems/horizon,agileblaze/OpenStackTwoFactorAuthentication,newrocknj/horizon,Solinea/horizon,j4/horizon,pranavtendolkr/horizon,liyitest/rr,eayunstack/horizon,karthik-suresh/horizon,mrunge/horizon,mandeepdhami/horizon,Mirantis/mos-horizon,anthonydillon/horizon,davidcusatis/horizon,izadorozhna/dashboard_integration_tests,vladryk/horizon,bigswitch/horizon,philoniare/horizon,zouyapeng/horizon,promptworks/horizon,idjaw/horizon,eayunstack/horizon,Mirantis/mos-horizon,mandeepdhami/horizon,endorphinl/horizon,orbitfp7/horizon,noironetworks/horizon,doug-fish/horizon,liyitest/rr,JioCloud/horizon,anthonydillon/horizon,mdavid/horizon,kfox1111/horizon,mrunge/horizon,openstack/horizon,damien-dg/horizon,anthonydillon/horizon,icloudrnd/automation_tools,Tesora/tesora-horizon,Solinea/horizon,dan1/horizon-proto,gerrive/horizon,dan1/horizon-proto,FNST-OpenStack/horizon,tanglei528/horizon,tqtran7/horizon,watonyweng/horizon,gochist/horizon,vladryk/horizon,django-leonardo/horizon,wolverineav/horizon,pranavtendolkr/horizon,bac/horizon,davidcusatis/horizon,gerrive/horizon,watonyweng/horizon,redhat-cip/horizon,NeCTAR-RC/horizon,yeming233/horizon,froyobin/horizon,yanheven/console,tqtran7/horizon,Mirantis/mos-horizon,Hodorable/0602,Tesora/tesora-horizon,agileblaze/OpenStackTwoFactorAuthentication,damien-dg/horizon,CiscoSystems/avos,bac/horizon,froyobin/horizon,mdavid/horizon,luhanhan/horizon,django-leonardo/horizon,idjaw/horizon,Mirantis/mos-horizon,agileblaze/OpenStackTwoFactorAuthentication,icloudrnd/automation_tools,tanglei528/horizon,noironetworks/horizon,luhanhan/horizon,NCI-Cloud/horizon,nvoron23/avos,redhat-cip/horizon,Daniex/horizon,dan1/horizon-x509,nvoron23/avos,davidcusatis/horizon,vladryk/horizon,coreycb/horizon,mrunge/horizon,redhat-openstack/horizon,dan1/horizon-x509,tsufiev/horizon,django-leonardo/horizon,yjxtogo/horizon,ging/horizon,orbitfp7/horizon,ikargis/horizon_fod,henaras/horizon,nvoron23/avos,saydulk/horizon,pranavtendolkr/horizon,kfox1111/horizon,tellesnobrega/horizon,tsufiev/horizon,yeming233/horizon,redhat-openstack/horizon,j4/horizon,flochaz/horizon,VaneCloud/horizon,Daniex/horizon,maestro-hybrid-cloud/horizon,CiscoSystems/avos,ChameleonCloud/horizon,idjaw/horizon,coreycb/horizon,philoniare/horizon,endorphinl/horizon-fork,yjxtogo/horizon,flochaz/horizon,blueboxgroup/horizon,FNST-OpenStack/horizon,aaronorosen/horizon-congress,coreycb/horizon,tsufiev/horizon,BiznetGIO/horizon,endorphinl/horizon-fork,orbitfp7/horizon,noironetworks/horizon,doug-fish/horizon,sandvine/horizon,CiscoSystems/horizon,doug-fish/horizon,endorphinl/horizon-fork,openstack/horizon,sandvine/horizon,noironetworks/horizon,pranavtendolkr/horizon,mrunge/openstack_horizon,spring-week-topos/horizon-week,anthonydillon/horizon,kfox1111/horizon,saydulk/horizon,RudoCris/horizon,flochaz/horizon,takeshineshiro/horizon,gochist/horizon,Metaswitch/horizon,endorphinl/horizon,NeCTAR-RC/horizon,Hodorable/0602,zouyapeng/horizon,bigswitch/horizon,mrunge/horizon_lib,tqtran7/horizon,gerrive/horizon,saydulk/horizon,vladryk/horizon,redhat-openstack/horizon,wangxiangyu/horizon,dan1/horizon-x509,ChameleonCloud/horizon,tanglei528/horizon,agileblaze/OpenStackTwoFactorAuthentication,watonyweng/horizon,bac/horizon,spring-week-topos/horizon-week,Dark-Hacker/horizon,doug-fish/horizon,Hodorable/0602,Solinea/horizon,yanheven/console,tellesnobrega/horizon,xme1226/horizon,mandeepdhami/horizon,yanheven/console,zouyapeng/horizon,henaras/horizon,Solinea/horizon,aaronorosen/horizon-congress,bac/horizon,wolverineav/horizon,promptworks/horizon,ging/horizon,flochaz/horizon,luhanhan/horizon,VaneCloud/horizon,j4/horizon,xme1226/horizon,newrocknj/horizon,dan1/horizon-x509,Hodorable/0602,ChameleonCloud/horizon,wangxiangyu/horizon,froyobin/horizon,NCI-Cloud/horizon,henaras/horizon,luhanhan/horizon,newrocknj/horizon,kfox1111/horizon,Tesora/tesora-horizon,mrunge/horizon_lib,Tesora/tesora-horizon,orbitfp7/horizon,ChameleonCloud/horizon,sandvine/horizon,aaronorosen/horizon-congress,tqtran7/horizon