Support of pipeline designer context while connector migration

TPD is adding context support within connector forms.
Context information is added to the serialized configuration like this :

("configuration.name2", "value_2")
("configuration.$name2_context_variable", "<ID>")

Here is a document that explain it:
https://github.com/Talend/data-streams-tools/blob/amaumont/feat/TFD-11345/context-variables-component-migration/design/TFD-11345_context-variables-component-migration/design.md

Currently connector migration can't deal with context.