Adding a new datastore to vCloud storage profile has change just a little bit with vSphere Web client.
refer to my previous post to see the difference:
http://virtualrealization.blogspot.com/2014/01/assigning-storage-profilepolicy.html

Information to know up front:
Storage policy/profile name
Storage capability (Rule-Set 1 Tag) – vSphere Web migrated the capabilities to Tags

Steps:

Backend storage:

1. This is normally handled by storage team which will provide the LUN.
2. Since I am also the storage engineer I created the LUN from my Dynamic Pool on the Hitachi AMS 2100.

Within vCenter server web client:

1. Right click the ESXi host from vCloud datastore
2. Select “all vCenter actions”  from menu -> Rescan storage
3. Only need to check the Scan for new Storage devices.
4. Rick click the ESXi host again
5. Select “New datastore”.
1. Type – VFMS or NFS depending on block or file level storage.
2. Datastore name
3. Select version
4. Partition size
6. Go to vSphere web client home page.
7. Select VM storage policies which will be associated to this datastore.
8. Edit the VM storage policy, select Rule-set and write down the Tag name
9. Right click the newly added datastore 
10. Select “Assign Tag”
11. Add the Tag to datastore for association to VM Storage policy.
12. Now you can add the new datastore to the Datastore cluster.