Add ca-certificates to the manifest

Change-Id: Ia751e1b2cb3fc5f3089393d35e71b87f8966403b
diff --git a/default.xml b/default.xml
index 44b3a4f..6df3395 100644
--- a/default.xml
+++ b/default.xml
@@ -505,6 +505,7 @@
   <project path="sdk" name="platform/sdk" groups="pdk-cw-fs,pdk-fs" />
   <project path="system/attestation" name="platform/system/attestation" />
   <project path="system/bt" name="platform/system/bt" groups="pdk" />
+  <project path="system/ca-certificates" name="platform/system/ca-certificates" groups="pdk" />
   <project path="system/connectivity/apmanager" name="platform/system/connectivity/apmanager" />
   <project path="system/connectivity/shill" name="platform/system/connectivity/shill" />
   <project path="system/core" name="platform/system/core" groups="pdk" />