* structs: use seperate SidecarTask struct for sidecar_task stanza and add merge * nomad: merge SidecarTask into proxy task during connect Mutate hook
* jobspec: breakup parse.go into smaller files * add sidecar_task parsing to jobspec and api * jobspec: combine service parsing logic for task and group service stanzas * api: use slice of ConsulUpstream values instead of pointers
Refactor all Consul structs into {api,structs}/services.go because api/tasks.go didn't make sense anymore and structs/structs.go is gigantic.
