Set directory paths used with dedicated build node

Change-Id: Ie1b6301e5cd788504d792af387c976339ce17f13
diff --git a/config/cord_in_a_box.yml b/config/cord_in_a_box.yml
index 27b92cb..f3ce426 100644
--- a/config/cord_in_a_box.yml
+++ b/config/cord_in_a_box.yml
@@ -17,8 +17,13 @@
 
   # set to the "flavor" of cord you want to install
   cord_profile: 'rcord'
+
+  # set paths to appropriate values
   cord_dir: '/opt/cord'
   cord_profile_dir: '/opt/cord_profile'
+  credentials_dir: '/opt/credentials'
+  pki_dir: '/opt/pki'
+  ssh_pki_dir: '/opt/ssh_pki'
 
   # Specifies tasks within the head node provisioning not to execute, including:
   #