Support for vaulted environments with / in their name

[Mythra]

Hey dadams hope you're doing well,

Although Vaulted "techincally" supports shells with / in their name it seems rapture does not:

$ vaulted -n tetrate/hub
Vault 'tetrate/hub'
   Password: 
   MFA token: <snipped>
tetrate/hub — expires: 7 Oct 2020 04:56 UTC (35h59m58s remaining)
$ rapture init tetrate/hub
ERROR: No such vault 'tetrate/hub'

I'm guessing this is mostly a side effect of it not appearing in vaulted ls, but it'd be nice to have parity here. I understand though if fixing the bug in vaulted is the right answer, just figured I'd let you know about this discrepancy regardless.