update hashes to be compatible for go>=1.11.4

[femnad]

Hello,

The way Go modules construct hashes for dependencies has been changed in Go 1.11.4 (a related issue here) and this causes hash mismatches when the kcfishgen module is built with a Go version of greater than 1.11.4, like the following

verifying k8s.io/kubernetes@v1.12.0: checksum mismatch
        downloaded: h1:2PjG+1oSb9SSwFkJIH6HZH85CDfJ7hOaMMMQYi1Q+0c=
        go.sum:     h1:jPDApxpqyQ/THiLnquNHidiHC1F8jvDi7BUGfNtue30=

This patch updates hashes of three dependencies to make the main module buildable with Go >= 1.11.4.

There is one caveat though; applying this patch may require the folks who have previously compiled with a Go version of less than 1.11.4 to perform a go clean -modcache to force a recalculation of the hashes for the dependencies which were affected by the mismatches.

Thanks.

[evanlucas]

Thanks!