The eap-mschapv2 and xauth-generic plugins are both provided by libcharon-extra-plugins which is in main.
It seems that you already split the TNC stuff off of libcharon-extra-plugins in https://git.launchpad.net/~paelzer/ubuntu/+source/strongswan/commit/?h=merge-zesty&id=4e1bbd943cb61de280ac9891896b79a549bd910b. So that's a very good start.
The eap-mschapv2 and xauth-generic plugins are both provided by libcharon- extra-plugins which is in main.
It seems that you already split the TNC stuff off of libcharon- extra-plugins in https:/ /git.launchpad. net/~paelzer/ ubuntu/ +source/ strongswan/ commit/ ?h=merge- zesty&id= 4e1bbd943cb61de 280ac9891896b79 a549bd910b. So that's a very good start.