[www] mark Block Storage API v1 as deprecated
[www] mark Block Storage API v1 as deprecated

According to http://developer.openstack.org/api-ref-blockstorage-v1.html
the Block Storage API v1 is deprecated.

Change-Id: I1ec939318f29e65247f8ab2ac92e339725082125

openstack/api-site,dreamhost/api-site,Tesora/tesora-api-site,dreamhost/api-site,openstack/api-site,openstack/api-site,dreamhost/api-site,Tesora/tesora-api-site,Tesora/tesora-api-site,dreamhost/api-site,dreamhost/api-site,Tesora/tesora-api-site,Tesora/tesora-api-site,dreamhost/api-site,openstack/api-site,Tesora/tesora-api-site,Tesora/tesora-api-site,dreamhost/api-site