added basic tests structure and /nodes example

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
added version tag to test rest URI

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
integrate nose tools for checks and create mockup

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
added tests for simple nodes

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
add test for packages found on one node

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
add test for requesting info on one package

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>
add tests for querying packages info

Signed-off-by: Dominik Richter <dominik.richter@gmail.com>