Enable new features of Corbot (#1831)
Enable new features of Corbot (#1831)

enable alias and add one, so that "/plugin: forward" adds a label
called plugin-forward to the issue.

enable branches that automatically delete merged branches.
jremond/coredns,jremond/coredns,chrisohaver/coredns,ii/coredns,yongtang/coredns,miekg/coredns,johnbelamaric/coredns,johnbelamaric/coredns,coredns/coredns,ii/coredns,miekg/coredns