Add -c 200ns -p 0ns baseline test to sweep config file

Now sweep mode has 5 tests:
-c 0ns -p 0ns (heavy load)
-c 200ns -p 0ns (baseline)
-c 1000ns -p 0ns (baseline)
-c 200ns -p 1000ns (median load)
-c 1000ns -p 5000ns (light load)

Author: Yangzheng Bai

benchmarks/lockhammer/scripts/lh_sweeptest_cfg.yaml

@@ -79,6 +79,10 @@ sweeptest:
           c: 0ns
           p: 0ns
           o: lstopo
+        - a: 5000
+          c: 200ns
+          p: 0ns
+          o: lstopo
         - a: 5000
           c: 1000ns
           p: 0ns