Run `bin/docker-up-vinyldns.sh` from a specific VinylDNS release branch

[vinyldns]

Run `bin/docker-up-vinyldns.sh` from a specific VinylDNS release branch

[mdb]

A better implementation could be the following:

if [ ! -d "$(GOPATH)/src/$(VINYLDNS_REPO)-$(VINYLDNS_VERSION)" ]; then \
  echo "$(VINYLDNS_REPO)-$(VINYLDNS_VERSION) not found in your GOPATH (necessary for acceptance tests), getting..."; \
  git clone \
    --branch v$(VINYLDNS_VERSION) \
    https://$(VINYLDNS_REPO) \
    $(GOPATH)/src/$(VINYLDNS_REPO)-$(VINYLDNS_VERSION); \
fi
$(GOPATH)/src/$(VINYLDNS_REPO)-$(VINYLDNS_VERSION)/bin/docker-up-vinyldns.sh \
  --api-only \
  --version $(VINYLDNS_VERSION)