k8s.io library error monitoring

consolidate if blocks

ignore hostname deletes when used by other ingresses

improves logging

Merge pull request #14 from utilitywarehouse/opt

optimisations and improvements

fix version

Merge pull request #11 from utilitywarehouse/ignore-label

Ignore Label

Merge pull request #10 from utilitywarehouse/multi-target

Enable setting multiple targets and specifying them via a label

Reduce logging verbosity

rename var