oeqa/utils: fix testcase decorator to allow calling tests individually
Without this, running tests individually failed with a traceback:
$ oe-selftest --run-test
buildoptions.ImageOptionsTests.test_incremental_image_generation
2014-12-23 14:40:37,636 - selftest - INFO - Checking that everything is in order before running the tests
2014-12-23 14:40:38,408 - selftest - INFO - Running bitbake -p
2014-12-23 14:40:40,235 - selftest - INFO - Loading tests from:
oeqa.selftest.buildoptions.ImageOptionsTests.test_incremental_image_generation
Traceback (most recent call last):
File "/home/user/poky/scripts/oe-selftest", line 179, in <module>
ret = main()
File "/home/user/poky/scripts/oe-selftest", line 164, in main
suite.addTests(loader.loadTestsFromName(test))
File "/usr/lib64/python2.7/unittest/loader.py", line 91, in loadTestsFromName
module = __import__('.'.join(parts_copy))
File "/home/user/poky/meta/lib/oeqa/selftest/buildoptions.py", line 12, in <module>
class ImageOptionsTests(oeSelfTest):
File "/home/user/poky/meta/lib/oeqa/selftest/buildoptions.py", line 14, in ImageOptionsTests
@testcase(761)
NameError: global name 'func' is not defined
Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
