Log Message:
Update sysutils/fabric to 1.2.3

Upstream changes since 1.2.2:

:bug:`323` ~fabric.operations.put forgot how to expand leading tildes in
the remote file path. This has been corrected. Thanks to Piet Delport for
the catch.
:bug:`182` During display of remote stdout/stderr, Fabric occasionally
printed extraneous line prefixes (which in turn sometimes overwrote wrapped
text.) This has been fixed.
:bug:`430` Tasks decorated with ~fabric.decorators.runs_once printed
extraneous 'Executing...' status lines on subsequent invocations. This is
noisy at best and misleading at worst, and has been corrected. Thanks to
Jacob Kaplan-Moss for the report.

Update to 1.3 will require a new Python ssh library - forked from paramiko.