classes/oeqa: Update for print statements and file() -> open() for python3

Found some more syntax cleanups needed for python3.

(From OE-Core rev: 1181d86e8707c5b8e8d43d5e785d7d9cf01fa491)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/utils/testexport.py

@@ -17,13 +17,13 @@ except ImportError:
             pass
         def plain(self, msg):
             if msg:
-                print msg
+                print(msg)
         def warn(self, msg):
             if msg:
-                print "WARNING: " + msg
+                print("WARNING: " + msg)
         def fatal(self, msg):
             if msg:
-                print "FATAL:" + msg
+                print("FATAL:" + msg)
                 sys.exit(1)
     bb = my_log()