Create separate .gitconfig for CT swarming bots
Create separate .gitconfig for CT swarming bots

This is to make sure that .gitconfig and .netrc do not get out of sync.
This happened when I was creating new instances today.

Bug: skia:6982
Change-Id: I4b21aca15f58ae65b7755b8c9e8c19a672b02d6c
Reviewed-on: https://skia-review.googlesource.com/37561
Reviewed-by: Ben Wagner <3ef7217be91069877d94f7907ce5479000772cd3@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