Add JSDocs to components (#9125)

* jsdocs

* remove todo that is no longer relevant

* clean up wording

* wordsmithing

* fix spelling

* example for clusterMode

ui/lib/core/addon/components/replication-doc-link.js

@@ -1,6 +1,17 @@
 import Component from '@ember/component';
 import layout from '../templates/components/replication-doc-link';
 
+/**
+ * @module ReplicationDocLink
+ * The `ReplicationDocLink` component is a learn link with helper text used on the Replication Dashboards.
+ * The link takes you to the key monitoring metrics learn doc.
+ *
+ * @example
+ * ```js
+ * <ReplicationDocLink />
+ * ```
+ */
+
 export default Component.extend({
   layout,
 });

ui/lib/core/addon/components/replication-header.js

@@ -1,6 +1,25 @@
 import Component from '@ember/component';
 import layout from '../templates/components/replication-header';
 
+/**
+ * @module ReplicationHeader
+ * The `ReplicationHeader` is a header component used on the Replication Dashboards.
+ *
+ * @example
+ * ```js
+ * <ReplicationHeader
+    @data={{model}}
+    @title="Secondary"
+    @secondaryID="meep_123"
+    @isSummaryDashboard=false
+    />
+ * ```
+ * @param {Object} model=null - An Ember data object pulled from the Ember cluster model.
+ * @param {String} title=null - The title of the header.
+ * @param {String} [secondaryID=null] - The secondaryID pulled off of the model object. 
+ * @param {Boolean} isSummaryDashboard=false - True when you have both a primary performance and dr cluster dashboard.
+ */
+
 export default Component.extend({
   layout,
   classNames: ['replication-header'],

ui/lib/core/addon/components/replication-table-rows.js

@@ -2,6 +2,21 @@ import Component from '@ember/component';
 import { computed } from '@ember/object';
 import layout from '../templates/components/replication-table-rows';
 
+/**
+ * @module ReplicationTableRows
+ * The `ReplicationTableRows` component is table component.  It displays cluster mode details specific to the cluster of the Dashboard it is used on.
+ *
+ * @example
+ * ```js
+ * <ReplicationTableRows
+    @replicationDetails={{replicationDetails}}
+    @clusterMode="primary"
+    />
+ * ```
+ * @param {Object} replicationDetails=null - An Ember data object pulled from the Ember Model. It contains details specific to the whether the replication is dr or performance.
+ * @param {String} clusterMode=null - The cluster mode (e.g. primary or secondary) passed through to a table component. 
+ */
+
 export default Component.extend({
   layout,
   classNames: ['replication-table-rows'],

ui/lib/replication/addon/components/replication-primary-card.js

@@ -36,7 +36,6 @@ export default Component.extend({
     return false;
   }),
   errorMessage: computed('hasError', function() {
-    // TODO figure out if we need another error message
     return this.hasError ? 'Check server logs!' : false;
   }),
 });