Adding distributed functional test. (#3)

* Adding distributed functional test.

- Since Minio distributed doesn't have a suite, this called can be run
  to test most of functionalities.

* Adding Dockerfile instructions.

- Adding Minio distributed functional test.
- Adding instructions to run from Docker.
- S3_ADDRESS env variable is used for server ENDPOINT.
- Readme.md changed accordingly.

Dockerfile

@@ -1,12 +1,15 @@
 FROM golang:1.7-alpine
 
-ADD . /home
+COPY . /home
 
-WORKDIR /home/minio-go-functional-test/
+WORKDIR /home
 
 RUN \
        apk add --no-cache bash git openssh && \
        go get -u github.com/minio/minio-go && \
-       go test -c api_functional_v4_test.go 
+       go test -c /home/minio-functional-test/server_test.go && \
+       go test -c /home/minio-go-functional-test/api_functional_v4_test.go 
 
-CMD ["./minio.test", "-test.timeout", "3600s","-test.v","-test.run","Test*"]
+CMD /home/cmd.test -test.v && \ 
+    /home/minio.test -test.timeout 3600s -test.v 
+

README.md

@@ -20,7 +20,7 @@ $ docker build -t minio/mint:alpha .
 
 Options are provided as environment variables to the docker container. Supported envs:
 
- - `ENDPOINT`     - <IP/URL>:<PORT> of the Minio server on which the tests has to be run.
+ - `S3_ADDRESS`     - <IP/URL>:<PORT> of the Minio server on which the tests has to be run.
  - `ACCESS_KEY`   - Access Key of the server.
  - `SECRET_KEY`   - Secret Key of the server.
  - `ENABLE_HTTPS` - Optional value when set to 1 sends HTTPS requests on SSL enabled deployment.
@@ -29,5 +29,5 @@ Options are provided as environment variables to the docker container. Supported
 ### Run
 
 ```sh
-$ docker run -e ENDPOINT=play.minio.io:9000 -e ACCESS_KEY=Q3AM3UQ867SPQQA43P2F  -e SECRET_KEY=zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG -e ENABLE_HTTPS=1  minio/mint:alpha
+$ docker run -e S3_ADDRESS=play.minio.io:9000 -e ACCESS_KEY=Q3AM3UQ867SPQQA43P2F  -e SECRET_KEY=zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG -e ENABLE_HTTPS=1  minio/mint:alpha
 ```