Mark description as stored in project index

This way we can read it back from the index in case we ever want to
serve the projects page direcly from the index instead of loading each
project. This would require further work though as currently we need to
load the project state to perform access checks.

We are doing it now anyway to not have to do another index upgrade
later.

Change-Id: I3275ea19845bd3331461dce8a16edd2d477e8fdc

java/com/google/gerrit/index/project/ProjectField.java

diff --git a/java/com/google/gerrit/index/project/ProjectField.java b/java/com/google/gerrit/index/project/ProjectField.java
index 5388253..5e484b2 100644
--- a/java/com/google/gerrit/index/project/ProjectField.java
+++ b/java/com/google/gerrit/index/project/ProjectField.java
@@ -37,7 +37,7 @@
       exact("name").stored().build(p -> p.getProject().getName());
 
   public static final FieldDef<ProjectData, String> DESCRIPTION =
-      fullText("description").build(p -> p.getProject().getDescription());
+      fullText("description").stored().build(p -> p.getProject().getDescription());
 
   public static final FieldDef<ProjectData, String> PARENT_NAME =
       exact("parent_name").build(p -> p.getProject().getParentName());