Workflow Monitor Tests: lack thereof

WorkflowMonitor untestable without extensive refactoring

Due to queue and messenger rework, workflow monitor tests are broken; test_wf_monitor module has been removed.

Tests were:

• test_parse_log: tested that example log file is correctly parsed by checking for the known order of event types
• test_parse_log_error: tested for ValueError when a badly formatted log is parsed
• test_read_log: tested whether or not example log is being correctly read by checking for strings known to exist in the example log file
• test_read_log_slow: tested that wf_monitor can keep up with reading when writing is slow.
• test_read_log_timeout: tested timeout functionality of WorkflowMonitor.read_htcondor_log()
• test_send_events: mocked core wf_monitor functionality of creating a connection to the RabbitMQ server, configuring a channel with that connection, and emitting events through that channel