Helper for those interested in verifying 0.5.0 RC2

[Tony Kurc <tk...@apache.org>]

Hello Apache NiFi community,

Here again is guidance to help those interested in
validating/verifying the release so they can vote.

# Download latest KEYS file:
  https://dist.apache.org/repos/dist/dev/nifi/KEYS

# Import keys file:
  gpg --import KEYS

# [optional] Clear out local maven artifact repository

# Pull down nifi-0.5.0 source release artifacts for review:

  wget
https://dist.apache.org/repos/dist/dev/nifi/nifi-0.5.0/nifi-0.5.0-source-release.zip
  wget
https://dist.apache.org/repos/dist/dev/nifi/nifi-0.5.0/nifi-0.5.0-source-release.zip.asc
  wget
https://dist.apache.org/repos/dist/dev/nifi/nifi-0.5.0/nifi-0.5.0-source-release.zip.md5
  wget
https://dist.apache.org/repos/dist/dev/nifi/nifi-0.5.0/nifi-0.5.0-source-release.zip.sha1

# Verify the signature
  gpg --verify nifi-0.5.0-source-release.zip.asc

# Verify the hashes (md5 and sha1) match the source and what was
provided in the vote email thread
  md5sum nifi-0.5.0-source-release.zip
  sha1sum nifi-0.5.0-source-release.zip

# Unzip nifi-0.5.0-source-release.zip

# Verify the build works including release audit tool (RAT) checks
  cd nifi-0.5.0
  mvn clean install -Pcontrib-check

# Verify the contents contain a good readme, notice, and license.

# Verify the git commit ID is correct

# Look at the resulting convenience binary as found in nifi-assembly/target

# Make sure the readme, license, notice are present and correct

# Run the resulting convenience binary and make sure it works as expected

# Send a response to the vote thread indicating a +1, 0, -1 based on
your findings.

Thank you for your time and effort to validate the release!

Tony