Adjust hooks test timing
Adjust hooks test timing

We unit test to be as less time sensitive as possible. This change
adjusts the timing in the test to ensure we have enough time for context
switching. Otherwise we get false negative sometimes.

BUG=chrome-os-partner:19236
TEST=Repeatedly run the test and see it passes.
BRANCH=None

Change-Id: I90c1200641cb02f95bd7631bd2870ad21b21bffc
Signed-off-by: Vic Yang <5fd92abeee651458f98e2856f4f200ee971cee4d@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/51562
Reviewed-by: Vincent Palatin <70a9964ec8fd10b0b08fcc8623c2add25ddf99ac@chromium.org>
Reviewed-by: Randall Spangler <62698fdbb84d1779579ee80c3f39fac22017e5bc@chromium.org>

md5555/ec,mtk09422/chromiumos-platform-ec,fourier49/BZ_DEV_EC,akappy7/ChromeOS_EC_LED_Diagnostics,thehobn/ec,alterapraxisptyltd/chromium-ec,gelraen/cros-ec,thehobn/ec,thehobn/ec,akappy7/ChromeOS_EC_LED_Diagnostics,akappy7/ChromeOS_EC_LED_Diagnostics,longsleep/ec,md5555/ec,coreboot/chrome-ec,gelraen/cros-ec,md5555/ec,akappy7/ChromeOS_EC_LED_Diagnostics,longsleep/ec,mtk09422/chromiumos-platform-ec,fourier49/BIZ_EC,longsleep/ec,eatbyte/chromium-ec,eatbyte/chromium-ec,fourier49/BZ_DEV_EC,mtk09422/chromiumos-platform-ec,akappy7/ChromeOS_EC_LED_Diagnostics,fourier49/BIZ_EC,alterapraxisptyltd/chromium-ec,longsleep/ec,md5555/ec,fourier49/BIZ_EC,coreboot/chrome-ec,coreboot/chrome-ec,thehobn/ec,coreboot/chrome-ec,alterapraxisptyltd/chromium-ec,eatbyte/chromium-ec,fourier49/BZ_DEV_EC,gelraen/cros-ec,coreboot/chrome-ec,gelraen/cros-ec,fourier49/BZ_DEV_EC,fourier49/BIZ_EC,mtk09422/chromiumos-platform-ec,coreboot/chrome-ec,alterapraxisptyltd/chromium-ec,eatbyte/chromium-ec