Add Function FLAVOURS to VM instances

[dann1]

• The flavour tuple is now mapped to each function VM user template

onevm show 268 -j | jq .VM.USER_TEMPLATE.FLAVOURS
"Function-Data"

• The SCHEDULING sub properties are now translated to UPPERCASE values for VM SCHED_REQUIREMENTS and SCHED_RANK parameters.
• Fixed an issue with tuple handling where a reference was used instead of a duplicate, causing an alteration that would result in a sequential modification of the original specification every time that the tuple extraction logic would be called