update kubernetes component to include deployByDefault information, update container component on sprcifying a volumeMount, update parent id reference with version specified

Signed-off-by: Stephanie <yangcao@redhat.com>

Author: yangcao77

.gitignore

@@ -15,6 +15,7 @@
 .DS_Store
 .vale.ini
 .yarnrc
+.idea/
 /build/
 /out/
 /node_modules/

docs/modules/user-guide/partials/proc_adding-a-container-component-to-a-devfile.adoc

@@ -46,7 +46,7 @@ A devfile can contain one or more components of the `container` type. The `compo
 .A minimal `container` component
 [source,yaml]
 ----
-schemaVersion: 2.2.0
+schemaVersion: 2.1.0
 metadata:
     name: mydevfile
 components:
@@ -67,7 +67,7 @@ For the `container` component to have access to the project sources, you must se
 +
 [source,yaml]
 ----
-schemaVersion: 2.2.0
+schemaVersion: 2.1.0
 metadata:
     name: mydevfile
 components:
@@ -81,6 +81,26 @@ components:
 +
 The sources are mounted on a location stored in the `PROJECTS_ROOT` environment variable that is made available in the running container of the image. This location defaults to `/projects`. If `sourceMapping` is defined in the container, it overrides the `PROJECT_ROOT` value and mounts the source to the path defined by `sourceMapping`.
 
+. Specify a volume
++
+For the `container` component to have a shared volume. You must define a volume component in the devfile, and reference the volume using `volumeMount` in container component. For more information on volume component, see xref:adding-a-volume-component-to-a-devfile.adoc[]
++
+[source,yaml]
+----
+components:
+  - name: mycontainer
+    container:
+      image: java11-maven:next
+      memoryLimit: 768Mi
+      mountSources: true
+      volumeMounts:
+        - name: m2
+          path: /home/user/.m2
+  - name: m2
+    volume:
+      size: 1Gi
+----
+
 . Container Entrypoint
 +
 Use the `command` attribute of the `container` type to modify the `entrypoint` command of the container created from the image. The availability of the `sleep` command and the support for the `infinity` argument depend on the base image used in the particular images.

docs/modules/user-guide/partials/proc_adding-a-kubernetes-or-openshift-component-to-a-devfile.adoc

@@ -52,5 +52,7 @@ You can add either a `kubernetes` or `openshift` component to a devfile.
 +
 . Specify the endpoint through the endpoint property with `kubernetes` or `openshift` components.
 
-. Associate `kubernetes` or `openshift` components with `Apply` commands. If you do not associate `Apply` commands, they are assumed to be applied at start up.
+. By default `kubernetes` or `openshift` components are not going to be deployed. Specify `deployByDefault=true` if you want to apply the component at start up.
+
+. Associate `kubernetes` or `openshift` components with `Apply` commands wth `deploy` command group kind. If the `kubernetes` or `openshift` component uses an image built by an image component defined in the devfile, you can create a composite command to build the image and deploy the Kubernetes or openshift component. For more information on `Apply` commands, see xref:adding-apply-commands-to-a-devfile.adoc[]
 +

docs/modules/user-guide/partials/proc_referring-to-a-parent-devfile-in-a-devfile.adoc

@@ -21,7 +21,7 @@ You can refer to a parent devfile in three different ways:
 +
 .Parent referred by registry
 ====
-Using the `id` when published in a registry.
+Using the `id` when published in a registry. Provide the `registryUrl` as well as `version`. `version` can be either the stack version string, or `latest`. If no `version` is provided, the default version for the stack will be used.
 
 [source,yaml]
 ----
@@ -31,6 +31,7 @@ metadata:
 parent:
     id: redhat/nodejs
     registryUrl: https://devfile-registry.io/
+    version: 1.2.0
 ----
 ====
 +