sanitycheck: Allow pre/postfixes in tests stdout

When checking if a testcase passed or failed, allow there
to be prefixes or postfixes in the line, around
PROJECT EXECUTION SUCCESSFUL/FAILED

Signed-off-by: Alberto Escolar Piedras <alpi@oticon.com>

scripts/sanitycheck

@@ -358,11 +358,11 @@ class NativeHandler(Handler):
         with open(self.run_log, "r") as rl:
             for line in rl.readlines():
                 line = line.strip()
-                if line == self.RUN_PASSED:
+                if self.RUN_PASSED in line:
                     out_state = "passed"
                     break
 
-                if line == self.RUN_FAILED:
+                if self.RUN_FAILED in line:
                     out_state = "failed"
                     break