[autoroll] Throttle the Skia -> Fuchsia roller to 2 CLs every 4 hours
[autoroll] Throttle the Skia -> Fuchsia roller to 2 CLs every 4 hours

Bug: https://fuchsia.atlassian.net/browse/INTK-79
Change-Id: Ia2f7dce693000c6677cb3c040f873d90dd6ca7bf
Reviewed-on: https://skia-review.googlesource.com/86740
Reviewed-by: Brian Osman <794c0b5534edf5601d88e1d41975d0262da12894@google.com>
Commit-Queue: Ravi Mistry <9fa2e7438b8cb730f96b74865492597170561628@google.com>

google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot,google/skia-buildbot