notification: Install unit tests
notification: Install unit tests

Bug: https://jira.iotivity.org/browse/IOT-524
Origin: https://gerrit.iotivity.org/gerrit/#/c/26509/
Change-Id: I91c44d9e3e8af731175337bc80afa13a44222d6c
Signed-off-by: Philippe Coval <ff46fec9739d31cce915aabcc3a7a2c00eee4d6c@osg.samsung.com>

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