Rename submit action to upload
Rename submit action to upload

'submit' has a particular meaning in gerrit - that the change has
reviewed and submitted to gerrit for merging.

Rename the submit action to upload to avoid confusion.

Change-Id: Ib560445dd56df6957e74be9ad5eaee6b27a1d754

meelapshah/git-review,meelapshah/git-review,openstack-infra/git-review,jeeloo/git-review,ka2m/git-review,entropia1/git-review