Add self ('olivneh') to professor.pmtpa.wmnet

Access to professor will help me debug relaying of NavigationTiming
data to Graphite. The patch grants me sudo as well. If all the relevant
configuration and data files are wikidev-readable, I may not need it, but
having it means being able to inspect things without having to nag on IRC.

Change-Id: I6e04acbf401d4d808d23ca1dfc7b6f5cd24715e5