Port ping-pong to DSF API v2

[jaboehri]

Related to DSF milestone pre-release: 2.0.0-M1

[jaboehri]

Currently, some/all classes from com.fasterxml.jackson.datatype.jsr310 are not allowed in DSF 2.x which does not seem to cause functional issue but spams the debug log. Mograting to API v2 might fix this implicitly as it comes with an ObjectMapper including the JavaTimeModule