(Temporary) Fix for submodule update error on CircleCI

submodule-update-fix-snippet.yml

# CircleCI failed to build a git submodule update step.
# Tracked it down to partially complete .git/modules existing in our source cache.
# This removes the .git/modules directory before the submodule update.

# The error:
# $ git submodule update --init
#   git submodule update --init returned exit code 128
#   fatal: Not a git repository: ../.git/modules/<project> Action failed: git submodule update --init

checkout:
  post:
    - rm -rf `git rev-parse --show-toplevel`/.git/modules
    - git submodule update —init