rest/tests.py: Run unit-tests in isolation.
rest/tests.py: Run unit-tests in isolation.

Make sure unit tests are not relying on global nagios
configuration on the machine running the tests.

zengzhaozheng/adagios,opinkerfi/adagios,opinkerfi/adagios,kb2ma/adagios,opinkerfi/adagios,zengzhaozheng/adagios,kb2ma/adagios,zengzhaozheng/adagios,kb2ma/adagios,opinkerfi/adagios,kb2ma/adagios,zengzhaozheng/adagios