CORD-1921 Fixes for documentation

Change-Id: I105c7a2ebcfa96d4e128378e5b8ee04b9c0819b7
(cherry picked from commit 8fa216c2aa8c0dbc393a14fbaed89181733901d6)
diff --git a/docs/install_physical.md b/docs/install_physical.md
index 9120567..f8b6ed6 100644
--- a/docs/install_physical.md
+++ b/docs/install_physical.md
@@ -518,7 +518,7 @@
 * From the OpenStack CLI on the head node, using the command
 
 ```
-source ~/admin-openrc.sh &&
+source /opt/cord_profile/admin-openrc.sh && \
 nova hypervisor-list
 ```
 
@@ -620,4 +620,5 @@
 define new service and service dependencies. You can access XOS at:
 
 * Using the XOS GUI at `http://<head-node-ip>/xos`
+* The username is `xosadmin@opencord.org` and the auto-generated password can be found in `/opt/credentials/xosadmin@opencord.org` on the head node