Adjust codecov config (codecov.yml) for commit status (#754)
Adjust codecov config (codecov.yml) for commit status (#754)

This fix adjusted codecov config (codecov.yml) so that
commit status is success as long as coverage > 40%.

This fix fixes #752.

Signed-off-by: Yong Tang <765086fe2e0c1f980161f127fec596800f327f62@outlook.com>
chrisohaver/coredns,varyoo/coredns,ii/coredns,johnbelamaric/coredns,jremond/coredns,jremond/coredns,miekg/coredns,ii/coredns,coredns/coredns,johnbelamaric/coredns,miekg/coredns,yongtang/coredns