"crit create token" returns no output

[seaunderwater]

When creating a bootstrap token using crit create token, no output is returned to the user:

$ crit create token
$

This is inconvenient for the following reasons:

• There is no indication that the command was successful.

• The user is left to search for the token using kubectl get secrets. This becomes difficult when there are several tokens:

  $  kg secrets
  NAME                                             TYPE                                  DATA   AGE
  ...
  bootstrap-signer-token-dzqwn                     kubernetes.io/service-account-token   3      161m
  bootstrap-token-8459vn                           bootstrap.kubernetes.io/token         6      4m10s
  bootstrap-token-drwuzf                           bootstrap.kubernetes.io/token         6      2m14s
  bootstrap-token-epw5fz                           bootstrap.kubernetes.io/token         6      31m
  bootstrap-token-otgi8h                           bootstrap.kubernetes.io/token         6      2m3s
  bootstrap-token-pxsarz                           bootstrap.kubernetes.io/token         6      3m2s
  bootstrap-token-vygvaf                           bootstrap.kubernetes.io/token         6      2m11s
  ...

• The user has to base64 decode and concatenate <token-id>.<token-secret>:

$ kg secret bootstrap-token-8459vn -o yaml 
apiVersion: v1
data:
  auth-extra-groups: c3lzdGVtOmJvb3RzdHJhcHBlcnM6Y3JpdDpkZWZhdWx0LW5vZGUtdG9rZW4=
  expiration: MjAzMC0xMC0wNVQxOTozODo1M1o=
  token-id: ODQ1OXZu
  token-secret: eXE0azkzZHhkd3Zxaml2cQ==
  usage-bootstrap-authentication: dHJ1ZQ==
  usage-bootstrap-signing: dHJ1ZQ==
kind: Secret
...

[ChrisRx]

In addition to this, both crit create token and crit generate token specific cobra.MinimumNArgs(1). crit create token should instead specify cobra.MaximumNArgs(1) and crit generate token should specify cobra.NoArgs.