Bugfix: Read state from sysfs.

measurement_main.py

 
 def is_hystart_activated():
     return (
-        subprocess.check_output(
-            "cat /sys/module/tcp_cubic/parameters/hystart", shell=True
+        int(
+            subprocess.check_output(
+                "cat /sys/module/tcp_cubic/parameters/hystart", shell=True
+            )
         )
         == "1"
     )
 
 def is_tcp_probe_enabled():
     return (
+        int(
             subprocess.check_output(
                 "cat /sys/kernel/debug/tracing/events/tcp/tcp_probe/enable", shell=True
             )
-            == "1"
+        )
+        == "1"
     )