Add openstack-orchestration to chef-repo Berksfile.

https://review.openstack.org/#/c/66751/ adds openstack-orchestration as a
dep for openstack-ops-databse, so the parent chef repo needs a url for
openstack-orchestration.

Change-Id: If842ef252fb10110798faa6134e49872ab8102d7
Add environment and roles for heat support

Change-Id: I8548c22ed1def430b0c71498d66d0cb4b8f40627
Implements: blueprint heat-support
Merge "Add environment and roles for heat support"
Remove Berksfile.lock

Berksfile.lock is not updated so points to old versions of each of the
stackforge cookbooks. Removing this file ensures that a user gets the
most recent stackforge cookbooks when installing with berkshelf.

Add Berksfile.lock to .gitignore so that another version isn't
committed.

Update Readme with note about Berksfile.lock

Change-Id: I8ea3223e98ac4dbab94e45f2323c6dcea2b54504