We have to continue scrubbing our documentation for anything
that generically refers to 'cells' since older documentation is
referring to cells v1, and we don't want people to confuse that
with cells v2. This simply provides a warning that cells v1 is
not recommended for new deployments and if you were looking for
help with cells v2 commands, we need to redirect you.
Change-Id: I3bd0332607bff169b5f496d17e4fc7d372ea991b
a2fd38f45a