Define uid and gid based on share

[IceflowRE]

auth:
  - user: iceflower
    group: www-data
    password_file: /run/secrets/iceflower_password

share:
// use uid 82 and gid 82 here
  - name: data
    path: /samba/data
    browsable: yes
    readonly: no
    guestok: no
    validusers: iceflower
    writelist: iceflower
    recycle: no
// use uid 1000 and gid 1000 here
  - name: data2
    path: /samba/data2
    browsable: yes
    readonly: no
    guestok: no
    validusers: iceflower
    writelist: iceflower
    recycle: no