fix bad reference, should be StreamAlertType.ALARM instead of StreamAlertType.ALERT (but probably the pending change is in StreamAlertType).
now platform agent dispatches alerts related with data coming from resource monitoring by using the alert manager.  New platform test test_alerts, which verifies setting alert definitions to the agent, as well as that the associated event publications are generated according to the sinusoidal signals generated by the simulator for a couple of parameters.
merge upstream/master
merge upstream/master
Merge pull request #1074 from carueda/platform_agent_R2C4

dispatch alerts related with platform resource monitoring (eng data)