Initial code for log analysis

- we agreed to basically throw away the old log checker (as it is
  unmaintainable)
- now: provide list of analysis to do
  * all checkers in cls_log_analysis, can be unit tested (see also next
    commit)
  * looked up dynamically to simplify adding of new tests + config
  * configured with

      <analysis>
        <services>DESCRIPTION [DESCRIPTION...]</services>
        <service>DESCRIPTION</service>
        ...
      </analysis>

    where DESCRIPTION follows service=func[=options]:
    - service is name of service to check
    - func is function to call, which receives filename
    - option are arbitary options to pass to func
    <services> is whitespace delimited (so can take multiple service
    analysis definitions)
    <service> exists to allow service definitions with whitespace
    changes that would not work in <services>
- I initially planned to check return code, but most softmodems actually
  exit with non-zero return code, so this is still TODO
- Default analyzer (checking for assertions, ...) is always run if a
  service is listed
- checks for file size
- add unit tests

ci-scripts/tests/log-analysis.py

@@ -0,0 +1,26 @@
+import sys
+import logging
+logging.basicConfig(
+	level=logging.DEBUG,
+	stream=sys.stdout,
+	format="[%(asctime)s] %(levelname)8s: %(message)s"
+)
+import os
+import unittest
+
+sys.path.append('./') # to find OAI imports below
+import cls_loganalysis
+
+class TestLogAnalysis(unittest.TestCase):
+    def test_no_file(self):
+        f = "/total/fantasy/path/file.log"
+        result, _ = cls_loganalysis.Default.run(f, None)
+        self.assertFalse(result)
+
+    def test_no_error(self):
+        f = "tests/log-analysis/empty.log"
+        result, _ = cls_loganalysis.Default.run(f, None)
+        self.assertTrue(result)
+
+if __name__ == '__main__':
+	unittest.main()