Test coverage for vnccollab.content.extender

vnccollab/      covered 92% (31 of 409 uncovered)
    content/      covered 92% (31 of 409 uncovered)
        extender/      covered 95% (1 of 23 uncovered)
            keywords.py      covered 95% (1 of 22 uncovered)
            __init__.py      covered 100% (0 of 1 uncovered)