Update CHANGELOG with 6.6.2 notes
Update CHANGELOG with 6.6.2 notes

Signed-off-by: Derek Richard <c66c8abe60571adced0f98547bf7e4a9d1c7a8e2@pivotal.io>

ofer43211/cli,cgvarela/cli,markstgodard/cli,TomG713/cli,AmitRoushan/cli,Zouuup/cli,diatmpravin/cli,Zouuup/cli,evanfarrar/cli,simonleung8/cli,xingzhou/cli,carnell69/cli,SrinivasChilveri/cli,ReachingOut/cli,pishro-cc/cli,Zouuup/cli,Zouuup/cli,srikanth88infy/cli,evanfarrar/cli,18F/cli,srikanth88infy/cli,hyenaspots/cli,zhang-hua/cli,evanfarrar/cli,pishro-cc/cli,saravana76/cli,zhang-hua/cli,evanfarrar/cli,saravana76/cli,markstgodard/cli,simonleung8/cli,pishro-cc/cli,saurabhguptasg/cli,hyenaspots/cli,cgvarela/cli,srikanth88infy/cli,xingzhou/cli,ReachingOut/cli,mcintyred/cli,fujitsu-cf/cli,AmitRoushan/cli,diatmpravin/cli,ReachingOut/cli,carnell69/cli,srikanth88infy/cli,mcowger/cli,EngineerBetter/cli,ofer43211/cli,18F/cli,diatmpravin/cli,markstgodard/cli,AmitRoushan/cli,EngineerBetter/cli,rastasheep/trash-can,18F/cli,mcintyred/cli,AmitRoushan/cli,fujitsu-cf/cli,SrinivasChilveri/cli,kavoj/cli,HuaweiTech/cli,carnell69/cli,HuaweiTech/cli,cf-routing/cli,ReachingOut/cli,TomG713/cli,kavoj/cli,TomG713/cli,ofer43211/cli,mcintyred/cli,kavoj/cli,TomG713/cli,SrinivasChilveri/cli,xingzhou/cli,cgvarela/cli,carnell69/cli,18F/cli,cf-routing/cli,saurabhguptasg/cli,cgvarela/cli,diatmpravin/cli,SrinivasChilveri/cli,zhang-hua/cli,mcowger/cli,EngineerBetter/cli,xingzhou/cli,saurabhguptasg/cli,mcowger/cli,simonleung8/cli,HuaweiTech/cli,hyenaspots/cli,fujitsu-cf/cli,saurabhguptasg/cli,ofer43211/cli,pishro-cc/cli,EngineerBetter/cli,saravana76/cli,markstgodard/cli,rastasheep/trash-can,mcintyred/cli,zhang-hua/cli,HuaweiTech/cli,kavoj/cli,rastasheep/trash-can,mcowger/cli,rastasheep/trash-can,hyenaspots/cli,saravana76/cli,cf-routing/cli,cf-routing/cli