Make "test_history" check skippable via SKIP_CHECKS
Make "test_history" check skippable via SKIP_CHECKS

"test_history" was a special case and so wasn't skippable via
SKIP_CHECKS. Make it skippable.

No related story link as Pivotal Tracker is currently down.

Change-Id: I9dfaac0b529ef4112a067088fb745cbf3d43bcbc
Reviewed-on: https://gerrit.causes.com/3408
Reviewed-by: Lann Martin <564fa7a717c51b612962ea128f146981a0e99d90@causes.com>
Tested-by: Lann Martin <564fa7a717c51b612962ea128f146981a0e99d90@causes.com>

gnagel/overcommit,gnagel/overcommit,TheSooth/overcommit,blech75/overcommit,blech75/overcommit,oxocode/overcommit,TheSooth/overcommit,oxocode/overcommit