feat(shared_mailbox): added helper script to share mailbox.

Shares all of the default folders.

MR !1

include/bin/group-mailbox.sh

@@ -0,0 +1,47 @@
+#!/bin/sh
+
+set -e
+
+MAILBOX_USER=$1
+USER_LOGIN_NAME=$2
+
+if [ "0$MAILBOX_USER" = "0" ]; then 
+
+echo " You must specify a mailbox to share";
+
+elif [ "0$USER_LOGIN_NAME" = "0" ]; then
+
+echo " You must specify a user the mailbox is to be shared with";
+
+else
+
+
+doveadm acl add -u $MAILBOX_USER Inbox user=$USER_LOGIN_NAME lookup read write write-seen write-deleted insert post expunge create delete
+doveadm acl add -u $MAILBOX_USER Archive user=$USER_LOGIN_NAME lookup read write write-seen write-deleted insert post expunge create delete
+doveadm acl add -u $MAILBOX_USER Drafts user=$USER_LOGIN_NAME lookup read write write-seen write-deleted insert post expunge create delete
+doveadm acl add -u $MAILBOX_USER Sent user=$USER_LOGIN_NAME lookup read write write-seen write-deleted insert post expunge create delete
+doveadm acl add -u $MAILBOX_USER Spam user=$USER_LOGIN_NAME lookup read write write-seen write-deleted insert post expunge create delete
+
+cat << EOF | /usr/lib/dovecot/dovecot-lda -d ${$USER_LOGIN_NAME} -o "plugin/quota=maildir:User quota:noenforcing"
+Auto-Submitted: auto-generated
+Date: $(date +'%a, %-d %b %Y %H:%M:%S %z')
+From: Postmaster <NO-REPLY@$(hostname -f)>
+Subject: New Shared Mailbox ($MAILBOX_USER)
+
+Hi,
+
+Just letting you known that mailbox $MAILBOX_USER, has been shared with you.
+
+You have visibility of the following folders
+
+- Inbox
+- Archive
+- Drafts
+- Sent
+- Spam
+
+EOF
+
+
+fi
+