xenopsd docs: Add Walk-through descriptions, show them on the index page

Signed-off-by: Bernhard Kaindl <[email protected]>

Author: bernhardkaindl

doc/content/xenopsd/walkthroughs/VM.migrate.md

@@ -1,5 +1,8 @@
 ---
 title: 'Walkthrough: Migrating a VM'
+linktitle: 'Migrating a VM'
+description: Walkthrough of migrating a VM from one host to another.
+weight: 50
 ---
 
 A XenAPI client wishes to migrate a VM from one host to another within

doc/content/xenopsd/walkthroughs/VM.start.md

@@ -1,6 +1,7 @@
 ---
 title: 'Walkthrough: Starting a VM'
 linktitle: 'Starting a VM'
+description: Complete walkthrough of starting a VM, from receiving the request to unpause.
 weight: 10
 ---
 

doc/content/xenopsd/walkthroughs/_index.md

@@ -6,7 +6,7 @@ linkTitle = "Walk-throughs"
 Let's trace through interesting operations to see how the whole system
 works.
 
-{{% children %}}
+{{% children depth=2 description=true %}}
 
 Inspiration for other walk-throughs:
 

doc/content/xenopsd/walkthroughs/live-migration.md

@@ -1,6 +1,7 @@
 +++
 title = "Live Migration Sequence Diagram"
 linkTitle = "Live Migration"
+description = "Sequence diagram of the process of Live Migration."
 +++
 
 {{<mermaid align="left">}}