[Feature] Provision for multiple instances of ETCD through ETCD CRD

[abdasgupta]

Feature (What you would like to be added): ETCD druid should create multiple ETCD instances(along with ETCDBR instances) as specified in ETCD CRD.

Motivation (Why is this needed?): To allow bootstrapping of multinode ETCD cluster for shoot cluster

Approach/Hint to the implement solution (optional):

Refer: #107

[amshuman-kr]

@abdasgupta Does it make sense to close this issue in favour of the issues listed here -> #107? I have tried to keep the scope for those issues specific and with links to the relevant sections in the proposal.

[abdasgupta]

@amshuman-kr Yes, go ahead please

[amshuman-kr]

Thanks.

/close In favour or #158