Add packages/apps/RetailDemo.

Bug: 36510340
Change-Id: I01a825bb87a5a3e85f70461aea61627453cdcfbc
diff --git a/default.xml b/default.xml
index 221c464..88867b9 100644
--- a/default.xml
+++ b/default.xml
@@ -429,7 +429,8 @@
   <project path="packages/apps/Protips" name="platform/packages/apps/Protips" groups="pdk-fs" />
   <project path="packages/apps/Provision" name="platform/packages/apps/Provision" groups="pdk-fs" />
   <project path="packages/apps/QuickSearchBox" name="platform/packages/apps/QuickSearchBox" groups="pdk-fs" />
-  <project path="packages/apps/SafetyRegulatoryInfo" name="platform/packages/apps/SafetyRegulatoryInfo" />
+  <project path="packages/apps/RetailDemo" name="platform/packages/apps/RetailDemo" groups="pdk-fs" />
+  <project path="packages/apps/SafetyRegulatoryInfo" name="platform/packages/apps/SafetyRegulatoryInfo" groups="pdk-fs" />
   <project path="packages/apps/Settings" name="platform/packages/apps/Settings" groups="pdk-fs" />
   <project path="packages/apps/SoundRecorder" name="platform/packages/apps/SoundRecorder" groups="pdk-fs" />
   <project path="packages/apps/SpareParts" name="platform/packages/apps/SpareParts" groups="pdk-fs" />