* Added API arg validator for RFC compliance domain name, to validate VM's host name
* Added unit tests for vm host/domain name validation
* Don't send sql exception/query from dao to upper layer, log it and send only the error message
* Updated user resources name / displayname(/text) column's charset to utf8mb4 to support emojis / unicode chars
* Check and update char set for affinity group name to utf8mb4, from the data migration in upgrade path
* Added smoke test to check resource name for vm, volume, service & disk offering, template, iso, account(first/lastname)
* Updated resource annotation charset to utf8mb4
* Updated some resources description charset to utf8mb4
* Updated sql stmt with constant
* Updated modify columns char set with idempotent procedure
* Removed delimiter (for creating procedures)
