Increase Erchef Ticket TTL

chef-client runs may die on long running steps with a 403 error. This is
because the auth ticket has expired. Increasing the timeout so this
happens much less frequently, esp. given our complex setups.

See: https://tickets.opscode.com/browse/CHEF-3045
Make quoting more consistent in chef-server.rb
Merge pull request #16 from claco/erchef-ttl-timouts

Increase Erchef Ticket TTL
Generalize target node list more
Bah typo
Back where it goes
One more time
One more time
New Havana scripts added.

Scripts added for backing up and restoring quantum databases when
upgrading to Havana from Grizzly.
renamed dir
changed readme title
Merge pull request #19 from cloudnull/havana-tools

added Havana tools
added additional process guards
updated cookbook version
Merge pull request #20 from cloudnull/chef-script-updates

updated cookbook version