Provides a brief description of the test. The scheduler
generates this string based on the test's state and where it
is in it's tests cycle.
For example, if the etsysIpSlaScheduleTestState is 'queued'
and there is 193 seconds prior to the next test cycle starting,
the string MAY read:
Cycle begins in 193 seconds
An implementation MAY choose to always return the empty string.