Add v1alpha4 API

This adds v1alpha4 API based on v1alpha3 API. This does not introduce
any change to the API yet. Changes in API for the upcoming features will
be added to v1alpha4 API.

Makefile

@@ -44,7 +44,7 @@ IMAGE_TAG:=$(shell IGNITE_GIT_VERSION=$(GIT_VERSION) DOCKER_USER=$(DOCKER_USER)
 IS_DIRTY:=$(shell echo ${GIT_VERSION} | grep -c dirty)
 PROJECT = github.com/weaveworks/ignite
 APIS_DIR = ${PROJECT}/pkg/apis
-API_DIRS = ${APIS_DIR}/ignite,${APIS_DIR}/ignite/v1alpha2,${APIS_DIR}/ignite/v1alpha3,${APIS_DIR}/meta/v1alpha1
+API_DIRS = ${APIS_DIR}/ignite,${APIS_DIR}/ignite/v1alpha2,${APIS_DIR}/ignite/v1alpha3,${APIS_DIR}/ignite/v1alpha4,${APIS_DIR}/meta/v1alpha1
 CACHE_DIR = $(shell pwd)/bin/cache
 # Specifies if this is a CI build or not; if it is, it will save the docker image created to bin/$(GOARCH)/image.tar
 IS_CI_BUILD ?= 0

cmd/ignite/cmd/vmcmd/ps.go

@@ -23,7 +23,7 @@ func NewCmdPs(out io.Writer) *cobra.Command {
  also list VMs that are not currently running.
  Using the -f (--filter) flag, you can give conditions VMs should fullfilled to be displayed.
  You can filter on all the underlying fields of the VM struct, see the documentation:
- https://ignite.readthedocs.io/en/stable/api/ignite_v1alpha3#VM.
+ https://ignite.readthedocs.io/en/stable/api/ignite_v1alpha4#VM.
 
  Different operators can be used:
  - "=" and "==" for the equal

cmd/ignite/run/testdata/output/apply-vm-config-empty.json

@@ -1,6 +1,6 @@
 {
  "kind": "VM",
- "apiVersion": "ignite.weave.works/v1alpha3",
+ "apiVersion": "ignite.weave.works/v1alpha4",
  "metadata": {
  "name": "",
  "created": "2000-01-01T01:00:00Z"

cmd/ignite/run/testdata/output/apply-vm-config-json.json

@@ -1,6 +1,6 @@
 {
  "kind": "VM",
- "apiVersion": "ignite.weave.works/v1alpha3",
+ "apiVersion": "ignite.weave.works/v1alpha4",
  "metadata": {
  "name": "",
  "created": "2000-01-01T01:00:00Z"

cmd/ignite/run/testdata/output/apply-vm-config-yaml.json

@@ -1,6 +1,6 @@
 {
  "kind": "VM",
- "apiVersion": "ignite.weave.works/v1alpha3",
+ "apiVersion": "ignite.weave.works/v1alpha4",
  "metadata": {
  "name": "",
  "created": "2000-01-01T01:00:00Z"

cmd/ignite/run/testdata/output/inspect-json.txt

@@ -1,6 +1,6 @@
 {
  "kind": "VM",
- "apiVersion": "ignite.weave.works/v1alpha3",
+ "apiVersion": "ignite.weave.works/v1alpha4",
  "metadata": {
  "name": "someVM",
  "uid": "1699b6ba255cde7f",

cmd/ignite/run/testdata/output/inspect-yaml.txt

@@ -1,4 +1,4 @@
-apiVersion: ignite.weave.works/v1alpha3
+apiVersion: ignite.weave.works/v1alpha4
 kind: VM
 metadata:
  created: "2000-01-01T01:00:00Z"