Move from keystoneclient to openstackclient in eucarc

Updating an ec2 create command to openstackclient syntax.

Change-Id: I3dd21ddd52b77f3af76988db9ae6b863427d9106
diff --git a/eucarc b/eucarc
index 3502351..343f4cc 100644
--- a/eucarc
+++ b/eucarc
@@ -22,7 +22,7 @@
 export EC2_URL=$(keystone catalog --service ec2 | awk '/ publicURL / { print $4 }')
 
 # Create EC2 credentials for the current user
-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 }')