This change updates the airshipctl virtualized testing env documentation
to clarify the differences between airshipctl and treasuremap
environments. It also moves the documentation to its own page, as not
all pre-reqs on the Developer's guide are required for the virtualized
testing environments.
Signed-off-by: Drew Walters <andrew.walters@att.com>
Change-Id: I6c2e8ff0f1bc21622fa38f06cf5af6d6ee01cd72
f5c3541778