Update version
Update Berksfile references

- Use up to date mysql for the /etc permissions fix
- Use latest memcached now that the attr errors have been fixed
- Pin down ntp to the same version as chef-cookbooks
Merge pull request #233 from claco/update-verksfile

Merged automatically by jenkins after successful build test
Fix swift-recon-cron lock errors

Depending on timing, and if you're running the chef client install pre
or post ring creation, the swift-recon-cron job might run, fail on no
drives, die with an error and leave the lock_dir in place. On the second
run, cron gets angry and the lock_dir must be removed before this task
will ever run properly even after ring/drive setup.

Only run the cron job if some form of /etc/swift/*.ring.gz exists.

Fixes rcbops-cookbooks/swift-private-cloud#235
Merge pull request #236 from claco/issue-235

Merged automatically by jenkins after successful build test
Add CHANGELOG.md
Merge pull request #237 from claco/master

Add CHANGELOG.md
update repos for 4.2
Merge pull request #239 from rpedde-rcbops/4.2.repos

Merged automatically by jenkins after successful build test
Merge remote-tracking branch 'upstream/master' into v4.2.1rc

Conflicts:
	Berksfile
Update version for release
Update Berksfile references to v4.2.1 releases
Updated Changelog