[PROPOSAL] Create karaf-4.3.x branch and update main to 4.4.0-SNAPSHOT

[Jean-Baptiste Onofre]

Hi guys,

In order to prepare R8 support, I would like to create karaf-4.3.x branch and 
update main to version 4.4.0-SNAPSHOT, and update to R8 and corresponding 
frameworks version (Felix and equinox).

No objection ?

Regards
JB