Use openstack CLI instead of keystone

When running './stack.sh' messages are output stating that
the keystone CLI has been deprecated. These calls should be
replaced to ones utilizing the openstack CLI program instead.

Documentation examples were also updated to reflect the new syntax.

Change-Id: Ib20b8940e317d150e5f6febb618e20bd85d13f8b
Closes-Bug: #1441340
diff --git a/doc/source/eucarc.rst b/doc/source/eucarc.rst
index 1284b88..c2ecbc6 100644
--- a/doc/source/eucarc.rst
+++ b/doc/source/eucarc.rst
@@ -13,7 +13,7 @@
 
     ::
 
-        EC2_URL=$(keystone catalog --service ec2 | awk '/ publicURL / { print $4 }')
+        EC2_URL=$(openstack catalog show ec2 | awk '/ publicURL: / { print $4 }')
 
 S3\_URL
     Set the S3 endpoint for euca2ools. The endpoint is extracted from
@@ -21,14 +21,14 @@
 
     ::
 
-        export S3_URL=$(keystone catalog --service s3 | awk '/ publicURL / { print $4 }')
+        export S3_URL=$(openstack catalog show s3 | awk '/ publicURL: / { print $4 }')
 
 EC2\_ACCESS\_KEY, EC2\_SECRET\_KEY
     Create EC2 credentials for the current tenant:user in Keystone.
 
     ::
 
-        CREDS=$(keystone ec2-credentials-create)
+        CREDS=$(openstack ec2 credentials create)
         export EC2_ACCESS_KEY=$(echo "$CREDS" | awk '/ access / { print $4 }')
         export EC2_SECRET_KEY=$(echo "$CREDS" | awk '/ secret / { print $4 }')