Standardise the names of types

Most commands use either a kind, or a more readable spelling of a
kind, in their output. To make this easier, this centralises the
definition of those names in one place, and lets the command
implementations choose whichever they need.

Signed-off-by: Michael Bridgen <michael@weave.works>

cmd/flux/suspend.go

@@ -43,8 +43,8 @@ type suspendable interface {
 }
 
 type suspendCommand struct {
-	object    suspendable
-	humanKind string
+	names
+	object suspendable
 }
 
 func (suspend suspendCommand) run(cmd *cobra.Command, args []string) error {