Fix daemons_running() on small window installations.

Handily ps(1) output is truncated to the size of the window, this
causes the running check to fail on consoles with small windows as the
salt-{minion,master,syndic} strings will not appear properly in the
output which is passed to grep(1). The use of multiple -w passed to
ps(1) prevents the truncation of the process lines.
Merge pull request #130 from geoffgarside/daemons-running

Fix daemons_running() on small window installations.