Updated login command help text
Updated login command help text

Signed-off-by: Damien Le Berrigaud <99e6b749acbfbe2a596df99e91d24d6e1fdbee00@pivotallabs.com>

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