Implements unit test for aggregator

scripts/clmc-service/install.sh

src/service/clmcservice/aggregation/__init__.py

src/service/clmcservice/aggregation/aggregator.py

src/service/clmcservice/aggregation/influx_data_interface.py

src/service/clmcservice/aggregation/test_aggregator.py

src/service/clmcservice/views.py

src/test/clmctest/monitoring/E2ETestAggregatorThread.py

src/test/clmctest/monitoring/conftest.py