Support vault secret inject while the main pod "automountServiceAccountToken" set false

[Hu Sheng]

Is your feature request related to a problem? Please describe.
vault injector works well, but for our security concern, is it possible to inject secret to our deployment pod while the "automountServiceAccountToken" setting false?

Describe the solution you'd like
see above

Describe alternatives you've considered
Nope

Additional context
To eliminate the security concern from our security team who worried that we don't need mount the service account when the main pod does not need to.

[Hu Sheng]

Ok, I found the solution myself, steps to disable auto mount the service account in business pod while used by init container

1. define the prioject volume which use the service account in deployment
2. add automountServiceAccountToken=false in deployment
3. add the annotation "vault.hashicorp.com/agent-service-account-token-volume-name: ----the project volume name----"

This configure will make deployment work as expected