Make site label available to site:list and org:site:list commands

src/Collections/Sites.php

@@ -114,6 +114,17 @@ public function filterByName($regex = '(.*)')
         return $this->filterByRegex('name', $regex);
     }
 
+    /**
+     * Filters the members of this collection by their labels
+     *
+     * @param string $regex Non-delimited PHP regex to filter site names by
+     * @return Sites
+     */
+    public function filterByLabel($regex = '(.*)')
+    {
+        return $this->filterByRegex('label', $regex);
+    }
+
     /**
      * Filters an array of sites by the plan name
      *

src/Commands/Org/Site/ListCommand.php

@@ -28,13 +28,15 @@ class ListCommand extends TerminusCommand implements SiteAwareInterface
      *
      * @field-labels
      *     name: Name
+     *     label: Label
      *     id: ID
      *     plan_name: Plan
      *     framework: Framework
      *     owner: Owner
      *     created: Created
      *     tags: Tags
      *     frozen: Is Frozen?
+     * @default-fields name,id,plan_name,framework,owner,created,tags,frozen
      * @return RowsOfFields
      *
      * @param string $organization Organization name, label, or ID

src/Commands/Site/ListCommand.php

@@ -20,6 +20,7 @@ class ListCommand extends SiteCommand
      *
      * @field-labels
      *     name: Name
+     *     label: Label
      *     id: ID
      *     plan_name: Plan
      *     framework: Framework