1. Modify response processing to distinguish single operation or batch operation
2. Modify the request function of creating volume in batches
Change-Id: Iffcd8174cf69191b8c36aa0f4de1853c8284fa93
1. Add client module to request openstack api
2. Remove window.request, stores use client to request api
3. Remove window.globals, use globalRootStore to deal with user info
Change-Id: I5657cfd8cf142dbacce8716991f805bbbb4a9222