Fix logging to file and summary for crashed tests

Logging was not being logged to log.txt
Crashed tests were not reported properly when running tests in one
process

Change-Id: Ica2d703d88351cc8a94bad86764ae4376dc79590
Signed-off-by: juraj.linkes <juraj.linkes@pantheon.tech>

test/framework.py

@@ -957,6 +957,7 @@ class VppTestResult(unittest.TestResult):
         self.verbosity = verbosity
         self.result_string = None
         self.printer = TestCasePrinter()
+        self.passed = 0
 
     def addSuccess(self, test):
         """
@@ -970,6 +971,7 @@ class VppTestResult(unittest.TestResult):
                               % (test.__class__.__name__,
                                  test._testMethodName,
                                  test._testMethodDoc))
+        self.passed += 1
         unittest.TestResult.addSuccess(self, test)
         self.result_string = colorize("OK", GREEN)