Deleting docker cluster doesn't delete control plane

[NillsF]

After deleting a cluster on Docker, the delete command doesn't delete the bootstrapper container. This causes the next create-cluster to fail:

nillsf@SHRISU-YOGA ~ % gokp delete-cluster development \ 
--cluster-name=$MYCLUSTER --kubeconfig=/home/nillsf/.gokp/$MYCLUSTER/$MYCLUSTER.kubeconfig

INFO[0000] Deleting development cluster nfcluster       
INFO[0022] Cluster nfcluster successfully deleted       

nillsf@SHRISU-YOGA ~ % gokp create-cluster development \
--cluster-name=$MYCLUSTER --github-token=$GH_TOKEN

INFO[0000] Running checks                               
INFO[0000] Creating temporary control plane             
FATA[0001] node(s) already exist for a cluster with the name "gokp-bootstrapper" 

[christianh814]

I've ran into this as well. The issue is that there's no cleanup when a failed deploy happens. The initial reasoning was because, on a hyperscaler, you might have a partial install and then need the bootstrap instance there to delete any artifacts that got left behind.

We should probably figure out a "smarter" way of doing this. Open to suggestions!