HBASE-26632 Should use downloads.apache.org for checksum, signature, changes.md and releasenote.md (#4002)
HBASE-26632 Should use downloads.apache.org for checksum, signature, changes.md and releasenote.md (#4002)

Signed-off-by: Sean Busbey <5c0191c5bda2836af1cb87878694cfbf1db676c8@apache.org>
Signed-off-by: Duo Zhang <ca823f7b4f21a31b6ef7892c1f90d53103f0d135@apache.org>
ndimiduk/hbase,apurtell/hbase,apurtell/hbase,ndimiduk/hbase,Apache9/hbase,Apache9/hbase,apurtell/hbase,ndimiduk/hbase,mahak/hbase,Apache9/hbase,apurtell/hbase,mahak/hbase,Apache9/hbase,mahak/hbase,ndimiduk/hbase,Apache9/hbase,apurtell/hbase,mahak/hbase,Apache9/hbase,Apache9/hbase,mahak/hbase,ndimiduk/hbase,apurtell/hbase,Apache9/hbase,mahak/hbase,Apache9/hbase,apurtell/hbase,apurtell/hbase,mahak/hbase,ndimiduk/hbase,ndimiduk/hbase,ndimiduk/hbase,Apache9/hbase,mahak/hbase,mahak/hbase,apurtell/hbase,ndimiduk/hbase,apurtell/hbase,mahak/hbase,ndimiduk/hbase