Resolve "DHCP4 Vendor-Specific Options do not get encapsulated when using the DB Backend (mysql)"
requested to merge 2881-dhcp4-vendor-specific-options-do-not-get-encapsulated-when-using-the-db-backend-mysql-2 into master
Closes #2881 (closed)
fix the encapsulation of the options with empty definition and with suboptions twice, once in the "data" field and once in the encapsulates spaces options.