`teleport-auth`: Provide ability to set `allow_reissue` flag.

[strideynet]

In the core tbot config, we've added an allow_reissue field:

 services:
  - type: identity
    destination:
      type: directory
      path: ./tbot-user
    ssh_config: 'off'
    allow_reissue: true

We should allow this to be specified as a parameter to the teleport-auth action and passed thru to the tbot config.

Users can workaround via https://goteleport.com/docs/enroll-resources/machine-id/deployment/github-actions/#example-manual-configuration

[strideynet]

Closed by Support configuring allow_reissue #56