Known Issue: missing force:auth commands

[mdonnalley]

There's a known issue with the force:auth commands not existing if:

1. You've installed a tagged version of salesforcedx or salesforce-alm (latest or latest-rc).
2. You haven't also updated sfdx-cli to the same tag.

In this scenario, the core auth plugin isn't updated to the latest version that's required to support the updated versions of salesforcedx and salesforce-alm.

The workaround is to run either of these commands:

• sfdx plugins:install auth@latest
• npm update -g sfdx-cli@latest-rc