Add git command to serverless-deploy pipe

[Tom Ford]

I am trying to use the `serverless-deploy` pipe 1.0.0 to build and deploy a python lambda to AWS. I am making use of `serverless-python-requirements` to handle my pip dependencies. One of my dependencies is in a private repo and so pip installs it using git. However the git command is not available inside the pipe. Could it be added?

ERROR: Error [Errno 2] No such file or directory: 'git': 'git' while executing command git clone -q 'ssh://****@bitbucket.org/