Use 'storage type' consistently in design doc
Use 'storage type' consistently in design doc

To minimize the confusion between whether or not a storage type
is the same as a storage method, I updated the design doc to
use 'storage type' instead of 'storage method' consistently.

Signed-off-by: Helga Velroyen <2d0126b1ec6f9ec5cbec4a7012aa14faeaef10f5@google.com>
Reviewed-by: Guido Trotter <f62ca4d5358bdaeef0e50e57f9f7e231de63727e@google.com>

onponomarev/ganeti,ganeti/ganeti,bitemyapp/ganeti,ganeti-github-testing/ganeti-test-1,apyrgio/snf-ganeti,onponomarev/ganeti,andir/ganeti,mbakke/ganeti,leshchevds/ganeti,ganeti/ganeti,dimara/ganeti,ganeti-github-testing/ganeti-test-1,ganeti/ganeti,mbakke/ganeti,dimara/ganeti,apyrgio/ganeti,apyrgio/snf-ganeti,andir/ganeti,grnet/snf-ganeti,leshchevds/ganeti,bitemyapp/ganeti,andir/ganeti,yiannist/ganeti,grnet/snf-ganeti,yiannist/ganeti,yiannist/ganeti,mbakke/ganeti,apyrgio/ganeti,leshchevds/ganeti