EngineVersionsMatch returns true if desired and latest engine versions match and false otherwise precondition: both desiredEV and latestEV are non-nil this handles the case where only the major EV is specified, e.g.

GetTags retrieves the resource's associated tags.

SyncTags keeps the resource's tags in sync NOTE(jaypipes): Elasticache's Tagging APIs differ from other AWS APIs in the following ways: 1.