[pkg-go] Bug#803133: etcd: FTBFS on arm64, ppc64, ppc64el

[Edmund Grimley Evans]

Source: etcd
Version: 2.2.0+dfsg-2

It failed to build:

https://buildd.debian.org/status/package.php?p=etcd&suite=sid

In each case the error was:

# github.com/boltdb/bolt
src/github.com/boltdb/bolt/db.go:85: undefined: maxMapSize
src/github.com/boltdb/bolt/db.go:85: invalid array bound maxMapSize

It appears that this may have been fixed upstream, though the patch is
not exactly perspicuous:

https://github.com/glevand/coreos--coreos-overlay/commit/5ecd5f6be491e50fc55a9ad1fbfd89dd21ee988c