I think what you want is

nova list --all-tenants

openstack server list --project project_name

• enclosed with quotoe if project name has spaces

or

nova list --tenant tenant_uuid

$ openstack help server list
usage: openstack server list [-h] [-f {csv,json,table,value,yaml}] [-c COLUMN]
                             [--max-width <integer>] [--print-empty]
                             [--noindent]
                             [--quote {all,minimal,none,nonnumeric}]
                             [--reservation-id <reservation-id>]
                             [--ip <ip-address-regex>]
                             [--ip6 <ip-address-regex>] [--name <name-regex>]
                             [--instance-name <server-name>]
                             [--status <status>] [--flavor <flavor>]
                             [--image <image>] [--host <hostname>]
                             [--all-projects] [--project <project>]

See the last line in the above output.