message: use Python from toolchain on Ubuntu 14.04 Evergreen hosts
diff: @@ -280,7 +280,9 @@ functions:
  fi
  export CMAKE=${cmake}
  - if ! python -m virtualenv venv 2>/dev/null; then
  + if [ "x$(lsb_release -cs)" = "xtrusty" -a -f /opt/mongodbtoolchain/v2/bin/python ]; then
  + /opt/mongodbtoolchain/v2/bin/python -m virtualenv venv
  + elif ! python -m virtualenv venv 2>/dev/null; then
  /opt/mongodbtoolchain/v3/bin/python3 -m venv venv
  fi
  