Add 'RC' DocState (#4158)

* Add 'RC' DocState

* Update README with step to set 'RC' DocState

Author: aneta-petrova

README.md

@@ -63,7 +63,7 @@ When a commit is pushed into `X.Y`:
 * On `master`, pull the latest changes and create a new `X.Y` branch.
 * On the `X.Y` branch:
   * Update `guides/common/attributes.adoc`.
-    * Set `DocState` to `unsupported`.
+    * Set `DocState` to `RC`.
     * Set `ProjectVersion` to `X.Y` and set the matching `KatelloVersion`.
   * Push into the `X.Y` branch.
   * Notify the Doc team on the [TheForeman Doc chat](https://matrix.to/#/#theforeman-doc:matrix.org) Matrix channel.

guides/common/attributes.adoc

@@ -1,5 +1,8 @@
-// Document state: "nightly" for master, "stable" for last two releases,
-// "unsupported" for the rest and "satellite" for satellite build
+// Document state: "nightly" for master,
+// "RC" for release candidate,
+// "stable" for the last two (supported) releases,
+// "unsupported" for the rest,
+// "satellite" for satellite build
 :DocState: nightly
 
 // Version numbers

guides/common/header.adoc

@@ -11,6 +11,10 @@ ifeval::["{DocState}" == "nightly"]
 :revnumber: Nightly
 :revdate: published {date_my}
 endif::[]
+ifeval::["{DocState}" == "RC"]
+:revnumber: {ProjectVersion} (release candidate)
+:revdate: published {date_my}
+endif::[]
 ifeval::["{DocState}" == "stable"]
 :revnumber: {ProjectVersion}
 :revdate: published {date_mdy}

guides/common/ribbons.adoc

@@ -10,6 +10,18 @@ Report issue
 </a>
 ++++
 endif::[]
+ifeval::["{DocState}" == "RC"]
+++++
+<!-- "Fork me on GitHub" CSS ribbon v0.2.3 | MIT License -->
+<!-- https://github.com/simonwhitaker/github-fork-ribbon-css -->
+<a class="release-ribbon right-top fixed" data-ribbon="Release candidate" title="Release candidate">
+Pre-release version
+</a>
+<a class="issue-ribbon right-bottom fixed" href="https://github.com/theforeman/foreman-documentation/issues/new" data-ribbon="Report issue" title="Report issue">
+Report issue
+</a>
+++++
+endif::[]
 ifeval::["{DocState}" == "stable"]
 ++++
 <!-- "Fork me on GitHub" CSS ribbon v0.2.3 | MIT License -->