Make all probe() functions accept and ignore arbitrary kwargs.

This is forward-compatibility for the next change, in which
a new kwarg (that none of them need, but a new module does)
will be added.

src/modules/checktest.py

@@ -73,7 +73,7 @@ def fetch_page(exit_desc):
         logger.debug("Exit relay %s passed the check test." % url)
 
 
-def probe(exit_desc, run_python_over_tor, run_cmd_over_tor):
+def probe(exit_desc, run_python_over_tor, run_cmd_over_tor, **kwargs):
     """
     Probe the given exit relay and look for check.tp.o false negatives.
     """

src/modules/cloudflared.py

@@ -92,7 +92,7 @@ def is_cloudflared(exit_fpr):
         logger.info("Exit %s does not see a CAPTCHA." % exit_url)
 
 
-def probe(exit_desc, run_python_over_tor, run_cmd_over_tor):
+def probe(exit_desc, run_python_over_tor, run_cmd_over_tor, **kwargs):
     """
     Check if exit relay sees a CloudFlare CAPTCHA.
     """

src/modules/dnspoison.py

@@ -93,7 +93,7 @@ def resolve(exit_desc, domain, whitelist):
                      (domain, exit))
 
 
-def probe(exit_desc, run_python_over_tor, run_cmd_over_tor):
+def probe(exit_desc, run_python_over_tor, run_cmd_over_tor, **kwargs):
     """
     Probe the given exit relay and check if all domains resolve as expected.
     """

src/modules/dnssec.py

@@ -67,7 +67,7 @@ def test_dnssec(exit_fpr):
     logger.critical("%s resolved domain to %s" % (exit_url, ipv4))
 
 
-def probe(exit_desc, run_python_over_tor, run_cmd_over_tor):
+def probe(exit_desc, run_python_over_tor, run_cmd_over_tor, **kwargs):
     """
     Test if exit relay can resolve broken domain.
     """

src/modules/patchingCheck.py

@@ -206,7 +206,7 @@ def run_check(exit_desc):
             os.remove(tmp_file)
 
 
-def probe(exit_desc, run_python_over_tor, run_cmd_over_tor):
+def probe(exit_desc, run_python_over_tor, run_cmd_over_tor, **kwargs):
     """
     Probe the given exit relay and look for modified binaries.
     """

src/modules/testfds.py

@@ -70,7 +70,7 @@ def fetch_page(exit_desc):
         logger.debug("Exit relay %s worked fine." % exit_url)
 
 
-def probe(exit_desc, run_python_over_tor, run_cmd_over_tor):
+def probe(exit_desc, run_python_over_tor, run_cmd_over_tor, **kwargs):
     """
     Attempts to fetch a small web page and yells if this fails.
     """