clases/lib: Use modern exception syntax

Update older code to use modern exception handling syntax which
is the form accepted by python 3.

(From OE-Core rev: b010501cd089e649a68f683be0cf4d0aac90fbe3)

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

meta/lib/oe/qa.py

@@ -106,6 +106,6 @@ class ELFFile:
             bb.note("%s %s %s" % (objdump, cmd, self.name))
             self.objdump_output[cmd] = bb.process.run([objdump, cmd, self.name], env=env, shell=False)[0]
             return self.objdump_output[cmd]
-        except Exception, e:
+        except Exception as e:
             bb.note("%s %s %s failed: %s" % (objdump, cmd, self.name, e))
             return ""