Added reload test suites (but not logs for one-offs).
Added validate test for Daily/Monthly/Yearly
Added shutdown tests for cycle and task.cycle
Merge remote branch 'upstream/master' into add-reload-test
Generated reference logs.
Merge remote branch 'upstream/master' into add-reload-test
Merge pull request #651 from arjclark/add-reload-test

cylc test-battery: add reload and shutdown suites