Tweak the CI script for CMake on Windows.
Tweak the CI script for CMake on Windows.

Change-Id: I10f78c381c3aaf542952863ac6d6e9398d2fbb65
Reviewed-on: https://code-review.googlesource.com/7217
Reviewed-by: Paul Wankadia <62d4e38bb1380f055ec4b899baa75e52af09c5f7@google.com>

google/re2,google/re2,google/re2,google/re2,google/re2