Adds a flag to specify root working directory.

--root_dir specifies the directory kubelet will use for it's
procedures. Currently used for volume mounts.

Update salt config for apiserver to support Azure.

Query minion's /healthz for sanity checking.

update github.com/fsouza/go-dockerclient

VM, and check kubelet's status.

Add unit tests for example syntax

Fix data race in kubelet fake_docker_client

Tests api/examples, examples, and any embedded json in readme.

- Fix reslice in Pull() to remove the just returned error
- Fix data races found during the integration testing
- Remove one-liner helper method for better readability

Use table testing for makePort tests

Update the cAdvisor manifest for the new volume type.

Restore behavior of trimming / from kubecfg url

Describe e2e-test.sh in the README

Closes #559

Also make the output and validation of input better for kubecfg api calls.
Kubecfg will now display a usage argument if the URL is incorrect or an
unrecognized storage type is passed.

Update the broken pod.json example in the README

Since it doesn't work @ head.

Actually fix kubecfg.

Add a name to containers created by RunController so that validation works

Change a != to a < to fix kubecfg.

Private kubelet

Kubelet etcd watch skipping indices

kubecfg doesn't allow updates because of path checks

Some examples don't pass Manifest validation

Check for 1 path segment on create/list, 2 on update/delete, and
allow any number of path segments on get (for now).

Also pretty prints the list of actual types that are supported for
create/update, which today corresponds to the list of types that
are supported period.

The next index to watch should always be current+1 if we got a
response from etcd, but otherwise it should always be current.
Moved the increment into fetchNextState which returns the next
index to watch for (or the same if an error occurs)

Fixed kube-up.sh to point to the right place.