Of the "Gerrit Linux clang/dbgutil" build nodes, one (tb79-pollux) has done the
lode update to use Clang 3.9.1, while the other two nodes (tb75-lilith and
tb76-maggie) are still at the old Clang 3.8.0.  When building Gerrit changes for
master, tb79-pollux started to fail in
compilerplugins/clang/test/staticconstfield now
(<https://ci.libreoffice.org/job/gerrit_linux_clang_dbgutil/20247/> and
<https://ci.libreoffice.org/job/gerrit_linux_clang_dbgutil/20252/>) while such
builds on the other two nodes still succeed.  So it looks like Clang 3.9.1 has
some issue with that loplugin, which will need further inspection.  For now, to
not break Gerrit/Jenkins builds, disable that test.

Change-Id: I1bd380fb98d3b9a411dd04578a5620cdb27cd35b