'''Obtain a dictionary of VIM (datacenter) classes with some of the input parameters
return dictionary with {datacenter_id: vim_class, ... }. vim_class contain:
'nfvo_tenant_id','datacenter_id','vim_tenant_id','vim_url','vim_url_admin','datacenter_name','type','user','passwd'
'''Obtain a dictionary of VIM (datacenter) classes with some of the input parameters
return dictionary with {datacenter_id: vim_class, ... }. vim_class contain:
'nfvo_tenant_id','datacenter_id','vim_tenant_id','vim_url','vim_url_admin','datacenter_name','type','user','passwd'