port (r)deps --no-test option is not documented

[ryandesign (Ryan Carsten Schmidt)]

In [f1de2b6679e61a83439e16b88e720366808c15ad/macports-base] a --no-test option was added to port deps and port rdeps. It's not documented in ​port(1) nor in ​port-rdeps(1). The latter manpage says:

port deps lists all dependencies of the given port(s), i.e., the ports that need to be installed to build or use a port.

port rdeps recursively descends into the dependencies and displays a tree of dependencies for a given port.

There is no suggestion here that test dependencies would be included and it's unexpected that they are.

The --no-test option is not documented in this manpage, nor is it documented in the ​port deps section of the Guide. The Guide doesn't document port rdeps at all.