SSHing to a link-local IPv6 address requires the following syntax:
This change adds "%interface" as part of IPv6 host regex in fabric.
[fe80::74f8:52ff:fe00:4%eth1] Executing task 'foo'
[fe80::74f8:52ff:fe00:4%eth1] put: test1.txt -> /tmp/test1.txt
support link-local IPv6 host addresses
Yes! This is magical...
Changelog re #1059, fixes #1059