Merged: Kubernetes and Swarm instructions in master

This release combines the previously separate Kubernetes and Swarm instructions into the master branch.

Expanded version with additional labs

Add small fixes to lab6 and lab11

Adressing issues from @padiazg also adding small changes
to the lab11 like changing name from `clearHash` to `getHash`
and adding `python` `yml` and `bash` to the code snippets

Signed-off-by: Martin Dekov (VMware) <[email protected]>

Initial version

Update messaging on specifying a different gateway endpoint

Signed-off-by: Eric Stoekl <[email protected]>