When operating "nova --os-compute-api-version 3 list-extensions" with a patch https://review.openstack.org/#/c/91942/ ,
the output is the following.
So 'extensions', 'flavors' and 'ips' are not camelcase. This seems inconsistent.
$ nova --os-compute-api-version 3 list-extensions
+--------------------------+-----------------------------------------------------------------------+-------------------------------+---------+
| Name | Summary | Alias | Version |
+--------------------------+-----------------------------------------------------------------------+-------------------------------+---------+
| Consoles | Consoles. | consoles | 1 |
| extensions | Extension information. | extensions | 1 |
| FlavorAccess | Flavor access support. | flavor-access | 1 |
| FlavorsExtraSpecs | Flavors Extension. | flavor-extra-specs | 1 |
| FlavorManage | Flavor create/delete API support. | flavor-manage | 1 |
| flavors | Flavors Extension. | flavors | 1 |
| ips | Server addresses. | ips | 1 |
| Keypairs | Keypair Support. | keypairs | 1 |
| AccessIPs | Access IPs support. | os-access-ips | 1 |
| AdminActions | Enable admin-only server actions... | os-admin-actions | 1 |
| AdminPassword | Admin password management support. | os-admin-password | 1 |
| Agents | Agents support. | os-agents | 1 |
| Aggregates | Admin-only aggregate administration. | os-aggregates | 1 |
| AttachInterfaces | Attach interface support. | os-attach-interfaces | 1 |
| AvailabilityZone | 1. Add availability_zone to the Create Server API.... | os-availability-zone | 1 |
| BlockDeviceMapping | Block device mapping boot support. | os-block-device-mapping | 1 |
| Cells | Enables cells-related functionality such as adding neighbor cells,... | os-cells | 1 |
| Certificates | Certificates support. | os-certificates | 1 |
| ConfigDrive | Config Drive Extension. | os-config-drive | 1 |
| ConsoleAuthTokens | Console token authentication support. | os-console-auth-tokens | 1 |
| ConsoleOutput | Console log output support, with tailing ability. | os-console-output | 1 |
| CreateBackup | Create a backup of a server. | os-create-backup | 1 |
| DeferredDelete | Instance deferred delete. | os-deferred-delete | 1 |
| Evacuate | Enables server evacuation. | os-evacuate | 1 |
| ExtendedAvailabilityZone | Extended Server Attributes support. | os-extended-availability-zone | 1 |
| ExtendedServerAttributes | Extended Server Attributes support. | os-extended-server-attributes | 1 |
| ExtendedStatus | Extended Status support. | os-extended-status | 1 |
| ExtendedVolumes | Extended Volumes support. | os-extended-volumes | 1 |
| FlavorRxtx | Support to show the rxtx status of a flavor. | os-flavor-rxtx | 1 |
| HideServerAddresses | Support hiding server addresses in certain states. | os-hide-server-addresses | 1 |
| Hosts | Admin-only host administration. | os-hosts | 1 |
| Hypervisors | Admin-only hypervisor administration. | os-hypervisors | 1 |
| LockServer | Enable lock/unlock server actions. | os-lock-server | 1 |
| MigrateServer | Enable migrate and live-migrate server actions. | os-migrate-server | 1 |
| Migrations | Provide data on migrations. | os-migrations | 1 |
| Multinic | Multiple network support. | os-multinic | 1 |
| MultipleCreate | Allow multiple create in the Create Server v3 API. | os-multiple-create | 1 |
| PauseServer | Enable pause/unpause server actions. | os-pause-server | 1 |
| PCIAccess | Pci access support. | os-pci | 1 |
| Quotas | Quotas management support. | os-quota-sets | 1 |
| RemoteConsoles | Interactive Console support. | os-remote-consoles | 1 |
| Rescue | Instance rescue mode. | os-rescue | 1 |
| SchedulerHints | Pass arbitrary key/value pairs to the scheduler. | os-scheduler-hints | 1 |
| SecurityGroups | Security group support. | os-security-groups | 1 |
| ServerActions | View a log of actions and events taken on an instance. | os-server-actions | 1 |
| ServerDiagnostics | Allow Admins to view server diagnostics through server action. | os-server-diagnostics | 1 |
| ServerExternalEvents | Server External Event Triggers. | os-server-external-events | 1 |
| ServerPassword | Server password support. | os-server-password | 1 |
| ServerUsage | Adds launched_at and terminated_at on Servers. | os-server-usage | 1 |
| Services | Services support. | os-services | 1 |
| Shelve | Instance shelve mode. | os-shelve | 1 |
| SuspendServer | Enable suspend/resume server actions. | os-suspend-server | 1 |
| Server Metadata | Server Metadata API. | server-metadata | 1 |
| Servers | Servers. | servers | 1 |
| Versions | API Version information. | versions | 1 |
+--------------------------+-----------------------------------------------------------------------+-------------------------------+---------+
Fix proposed to branch: master
Review: https:/