Add vendor folder to git

vendor/github.com/docker/distribution/contrib/docker-integration/README.md

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+# Docker Registry Integration Testing
+
+These integration tests cover interactions between the Docker daemon and the
+registry server. All tests are run using the docker cli.
+
+The compose configuration is intended to setup a testing environment for Docker
+using multiple registry configurations. These configurations include different
+combinations of a v1 and v2 registry as well as TLS configurations.
+
+## Running inside of Docker
+### Get integration container
+The container image to run the integation tests will need to be pulled or built
+locally.
+
+*Building locally*
+```
+$ docker build -t distribution/docker-integration .
+```
+
+### Run script
+
+Invoke the tests within Docker through the `run.sh` script.
+
+```
+$ ./run.sh
+```
+
+Run with aufs driver and tmp volume
+**NOTE: Using a volume will prevent multiple runs from needing to
+re-pull images**
+```
+$ DOCKER_GRAPHDRIVER=aufs DOCKER_VOLUME=/tmp/volume ./run.sh
+```
+
+### Example developer flow 
+
+These tests are useful for developing both as a registry and docker
+core developer. The following setup may be used to do integration
+testing between development versions
+
+Insert into your `.zshrc` or `.bashrc`
+
+```
+# /usr/lib/docker for Docker-in-Docker
+# Set this directory to make each invocation run much faster, without
+# the need to repull images.
+export DOCKER_VOLUME=$HOME/.docker-test-volume
+
+# Use overlay for all Docker testing, try aufs if overlay not supported
+export DOCKER_GRAPHDRIVER=overlay
+
+# Name this according to personal preference
+function rdtest() {
+  if [ "$1" != "" ]; then
+    DOCKER_BINARY=$GOPATH/src/github.com/docker/docker/bundles/$1/binary/docker
+    if [ ! -f $DOCKER_BINARY ]; then
+      current_version=`cat $GOPATH/src/github.com/docker/docker/VERSION`
+      echo "$DOCKER_BINARY does not exist"
+      echo "Current checked out docker version: $current_version"
+      echo "Checkout desired version and run 'make binary' from $GOPATH/src/github.com/docker/docker"
+      return 1
+    fi
+  fi
+
+  $GOPATH/src/github.com/docker/distribution/contrib/docker-integration/run.sh
+}
+```
+
+Run with Docker release version
+```
+$ rdtest
+```
+
+Run using local development version of docker
+```
+$ cd $GOPATH/src/github.com/docker/docker
+$ make binary
+$ rdtest `cat VERSION`
+```
+
+## Running manually outside of Docker
+
+### Install Docker Compose
+
+[Docker Compose Installation Guide](https://docs.docker.com/compose/install/)
+
+### Start compose setup
+```
+docker-compose up
+```
+
+### Install Certificates
+The certificates must be installed in /etc/docker/cert.d in order to use TLS
+client auth and use the CA certificate.
+```
+sudo sh ./install_certs.sh
+```
+
+### Test with Docker
+Tag an image as with any other private registry. Attempt to push the image.
+
+```
+docker pull hello-world
+docker tag hello-world localhost:5440/hello-world
+docker push localhost:5440/hello-world
+
+docker tag hello-world localhost:5441/hello-world
+docker push localhost:5441/hello-world
+# Perform login using user `testuser` and password `passpassword`
+```
+
+### Set /etc/hosts entry
+Find the non-localhost ip address of local machine
+
+### Run bats
+Run the bats tests after updating /etc/hosts, installing the certificates, and
+running the `docker-compose` script.
+```
+bats -p .
+```
+
+## Configurations
+
+Port | V2 | TLS | Authentication
+--- | --- | --- | ---
+5000 | yes | no | none
+5002 | yes | no | none
+5440 | yes | yes | none
+5441 | yes | yes | basic (testuser/passpassword)
+5442 | yes | yes | TLS client
+5443 | yes | yes | TLS client (no CA)
+5444 | yes | yes | TLS client + basic (testuser/passpassword)
+5445 | yes | yes (no CA) | none
+5446 | yes | yes (no CA) | basic (testuser/passpassword)
+5447 | yes | yes (no CA) | TLS client
+5448 | yes | yes (SSLv3) | none