Improve traceability of started network nodes

When running integration tests on TeamCity, there exists a possibility that some Ignite nodes, started during these tests, do not get stopped, which can interfere with other tests and lead to their failure. It is proposed to update ClusterServiceUtils#clusterService to create nodes with meaningful names, i.e. that will include a test class and a test method name so that it will be easier to identify the test that had lead to the broken state of a build.