Apply cloud labels into ELB

[wingyplus]

Fixes #2048

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[wingyplus]

/assign @chrislovecnm

[mikesplain]

/ok-to-test

[wingyplus]

/test pull-kops-e2e-kubernetes-aws

[wingyplus]

/cc @mikesplain

[KashifSaadat]

Thanks for the fix @wingyplus, looks good :)

/lgtm
/approve

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This pull-request has been approved by: KashifSaadat, wingyplus

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[wingyplus]

@KashifSaadat Thanks :)

[gambol99]

This is a dangerous one to add as i've just encounter. Beforehand the cloud tags were not added but now they are and expected in the 'find' of the fi tasks .. This cause's a number of resources which was not presently tagged (vpc, subnets, routing tables etc) by a previous kops binary not to be found and be marked as creating on the kops apply. Also we use dynamic tags (i.e. gitsha's and release version) which would never work ... Thankfully it was in testing .. @mikesplain @justinsb ..

[justinsb]

So this had to be reverted - if you're still interested in pursuing it, I think you need to plumb through the additional tags here:

kops/pkg/model/awsmodel/api_loadbalancer.go

Line 117 in c55b032

elb = &awstasks.LoadBalancer{

i.e. specifically in the ELB, not generally at the cloud level.

The problem is that tags at the cloud level act as a filter. Another option would be to have tags at the cloud level that are added, but don't act as a filter - that would be the spirit of what you've done in this PR.