Enable running CouchDB in devenv

FAB-729

1. Port 5984 forwarded from VM to host.
2. `couchdb` script added in devenv/tools/bin to start
    and stop couchdb.

Change-Id: I830b6914422bf6e3d7ffbc7b8fffc8ad736d1f7b
Signed-off-by: Luis Sanchez <sanchezl@us.ibm.com>

devenv/Vagrantfile

@@ -38,6 +38,7 @@ Vagrant.configure('2') do |config|
   config.vm.network :forwarded_port, guest: 7051, host: 7051 # Openchain gRPC services
   config.vm.network :forwarded_port, guest: 7054, host: 7054 # Membership service
   config.vm.network :forwarded_port, guest: 7053, host: 7053 # GRPCCient gRPC services
+  config.vm.network :forwarded_port, guest: 5984, host: 5984 # CouchDB service
 
   config.vm.synced_folder "..", "#{SRCMOUNT}"
   config.vm.synced_folder "..", "/opt/gopath/src/github.com/hyperledger/fabric"

devenv/tools/couchdb

@@ -0,0 +1,49 @@
+#!/usr/bin/env bash
+
+couchDbContainerStatus() {
+  for s in created restarting running paused exited dead ; do
+    if [ -n "$(docker ps --all --quiet --filter name=couchdb --filter status=$s)" ] ; then
+      echo $s
+      return 0
+    fi
+  done
+}
+
+case "$1" in
+  "start")
+    case "$(couchDbContainerStatus)" in
+      "created" )
+        echo "Starting couchdb container..."
+        docker start couchdb
+        ;;
+      "exited" )
+        echo "Restarting couchdb container..."
+        docker restart couchdb
+        ;;
+      "paused" )
+        echo "Unpausing couchdb container..."
+        docker unpause couchdb
+        ;;
+      "running" )
+        echo "couchdb container is already started"
+        docker ps --filter name=couchdb
+        ;;
+      "restarting" | "dead" | * )
+        # if running, restarting, or dead, just let user deal with error
+        docker run \
+          --publish 5984:5984    `# publish port`   \
+          --detach               `# run as daemon`  \
+          --name couchdb         `# name container` \
+          `# map database dir to a host dir`        \
+          klaemo/couchdb:2.0.0
+        ;;
+    esac
+    ;;
+  "stop")
+    echo "Stopping couchdb container..."
+    docker stop couchdb
+    ;;
+  "status" | *)
+    docker ps --all --filter name=couchdb --format "{{.Status}}"
+    ;;
+esac