Bug 28523: Fix the readelf_RELRO test

Fix the test by skipping the file _zope_interface_coptimizations.so
(used by FTE, which we plan to drop soon).

TBBTestSuite/TestSuite/BrowserBundleTests.pm

@@ -98,6 +98,7 @@ our @tests = (
             TorBrowser/Tor/PluggableTransports/meek-client-torbrowser
             TorBrowser/Tor/PluggableTransports/meek-client-torbrowser
             TorBrowser/Tor/PluggableTransports/obfs4proxy
+            TorBrowser/Tor/PluggableTransports/zope/interface/_zope_interface_coptimizations.so
             ) ],
     },
     {