githooks: ensure pip + scipy are installed

Now that we always enter the chroot for presubmits, we might try to run
tests in a world where we run `crosperf` tests without `numpy` or
`scipy` installed.

There's probably a better solution here (this one is kinda bad because
presubmits are 'quiet' until we fail, and all of this setup can take up
to a minute), but until we find that, stop the bleeding (aka people
doing `--no-verify`)

BUG=chromium:980719
TEST=Ran crosperf tests with a fresh chroot.

Change-Id: I71275f6be0e38bf086b14d35b8bc4bfffcd7ab18
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/toolchain-utils/+/2199644
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
Tested-by: George Burgess <gbiv@chromium.org>
1 file changed