[esock] Make it it work for IPv6

The nif code expects the socket address to be "complete",
that is all fields must exist. This was not the case for
a couple of functions, sendto, sendmsg and connect.
What was mssing was a call to 'ensure_sockaddr'.

Test: 1) Add a condition function to test if IPv6 is available
         and works.
      2) Needed to adjust a test case (actually a common function
         used in several test cases) since the socket address
	 data type has two optional fields, which we do not
	 initiate (when sending), but the nif-code does fill in.

OTP-15897

0 files changed, 0 insertions, 0 deletions