Add golang runtime support to default deployments

[csantanapr]

Title: Add golang runtime support to default deployments

1. Add golang to core ansible/vagrant deploy

• Add golang entry into ansible/files/runtimes.json

"golang": [
    {
        "kind": "golang:1.11",
        "default": true,
        "deprecated": false,
        "attached": {
            "attachmentName": "codefile",
            "attachmentType": "text/plain"
        },
        "image": {
            "prefix": "openwhisk",
            "name": "actionloop-golang-v1.11",
            "tag": "latest"
        }
    }
]

• Update and add doc file into docs/action_golang.md
• Update unicode tests https://github.com/apache/incubator-openwhisk/tree/master/tests/dat/actions/unicode.tests

Use Ruby PR as reference: #3725

2. Add golang to CLI

• Add support for --kind golang:x and prefix .go
  Use Ruby PR as reference: Add new file extension tentatively for Ruby runtime openwhisk-cli#352

3. Add golang to docker-compose deploy

• Add golang into runtime manifest
  https://github.com/apache/incubator-openwhisk-devtools/blob/master/docker-compose/docker-whisk-controller.env#L64
  Use Ruby PR as reference: Add support for Ruby 2.5 openwhisk-devtools#150

4. Add golang to deploy-kube

• Add golang into runtime manifest
  https://github.com/apache/incubator-openwhisk-deploy-kube/blob/master/helm/openwhisk/runtimes.json
  Use Ruby PR as reference:Add Ruby 2.5 to the list of runtimes openwhisk-deploy-kube#274

5. Update wskdeploy

Issue opened here apache/openwhisk-wskdeploy#1004

6 Update website

Issue opened here apache/openwhisk-website#343

[csantanapr]

cc @sciabarra ^^

[rabbah]

Excellent. Glad to see this!

[csantanapr]

I think folks voted in mailing list for --king go:1.11 over --kind golang:1.11
So it needs to be

"go": [
    {
        "kind": "go:1.11",
        "default": true,
        "deprecated": false,
        "attached": {
            "attachmentName": "codefile",
            "attachmentType": "text/plain"
        },
        "image": {
            "prefix": "openwhisk",
            "name": "actionloop-golang-v1.11",
            "tag": "latest"
        }
    }
]

[sciabarracom]

Submitted all the 4 PR required.

[csantanapr]

core repo PR merged: #4093

[csantanapr]

deploy-kube repo merged: apache/openwhisk-deploy-kube#327

[csantanapr]

@daisy-ycguo Do you know if we need changes for wskdeploy?

[csantanapr]

The devtools PR is merged: apache/openwhisk-devtools#172

[csantanapr]

core cli PR is merged now: apache/openwhisk-cli#375

[csantanapr]

I need to check if wskdeploy needs to updated with the runtime

[csantanapr]

@sciabarracom You want to handle these also

I added items 5 and 6 above

5. Update wskdeploy

Issue opened here apache/openwhisk-wskdeploy#1004

6 Update website

Issue opened here apache/openwhisk-website#343