* fix bootstrap and rackspace server create to set the correct ssh
  password config setting for knife ssh
* refactor knife bootstrap to be testable
* add tests for knife bootstrap

also, provide the --once option to force it to run once and exit with no
splay and no run interval

fixed CHEF-1745: 'knife (node|role|client|data bag) edit' never thinks you edited the object, so doesn't save it

provider was previously always marking the resource as
updated_by_last_action. Only set it when the resource was really
updated, and add unit/regression tests for the behavior.

CWD isn't in the load path by in ruby 1.9.2, so it needs to be
explicitly added to load the new CouchDB replicator code

Fix CHEF-1739 -- make CouchDB manual replication use RestClient/JSON directly so we don't expand user-defined classes

also, log the backtrace at level :debug

...instead of barfing

add -h flag to psexec: If the target system is Vista or higher, has the process run with the account's elevated token, if available.

(copied from bootstrap_spec.rb)

intentionally non-templated so this script can be run standalone (bootstrap the machine you use to bootstrap)

modify ec2 server create so that it waits for sshd to come up on the
host, *THEN* waits a bit for it to generate its host key, then continues
on to bootstrapping. This ensures that we're sleeping during the host
key generation process no matter how long the instance takes to boot.