framework: Re-enable instruments before finalizing run

Ensure all instruments are re-enabled prior to run finalization
so their `finalize()` methods are invoked. This fixes an issue
where instruments not enabled during the last job skipped finalization.

Fixes: #1295

wa/framework/execution.py

@@ -532,6 +532,7 @@ class Runner(object):
                 job.finalize(self.context)
         self.logger.info('Finalizing run')
         self.context.end_run()
+        instrumentation.enable_all()
         self.pm.enable_all()
         with signal.wrap('RUN_OUTPUT_PROCESSED', self):
             self.pm.process_run_output(self.context)