Cleanup deploy_chef, just keep omnibus method and nothing else.
We do not care about method anymore.
Add possibility to specify http/https proxy and gateway in node file instead of littlechef config file.
Add support for setting proxy for chef-solo.
Fix tests after berksfile merge.
Fix tests.

Conflicts:
	tests/test_command.py
	tests/test_runner.py
Fix test by loading cookbook_paths to fix
Fix test by loading cookbook_paths to fix
Add support for synchronizing temporary berkshelf directory to a node and run chef-solo from it.

Conflicts:
	littlechef/solo.py
Run berks vendor before we start to do any work with nodes and remove vendor directory after.
setup berksfile and berksfile_dir
Do not try to vendor cookbooks if there is no Berksfile defined in configuration.
Some fixes from @tobami
Make sure that we do not override proxy and gateway for other nodes than current one.
Merge tests fixes to broken branch.
Merge branch 'upstream_berskfile_support'

Conflicts:
	littlechef/chef.py
Merge branch 'upstream_chef_solo_proxy'

Conflicts:
	littlechef/runner.py
Merge branch 'upstream_deploy_chef_fix'

Conflicts:
	README.md
	littlechef/runner.py