Swagger type missing (grouping + multi level augmentation)

[bartoszm]

When a grouping is used multiple times with and without augmentation it might happen that swagger type is not present in the resulting RESTCONF API definition. It happens when augmenting node subtree is augmented again from different module

base module

container base {

module1

augment "/b:base-container"

module2

augment "/b:base-container/mod1:a/mod1:b-list" 
augment "/b:base-container/mod1:a/mod1:b-list/mod1:sublist"