LU-10391 lnet: use %pISc for formatting IP addresses

LU-10391 lnet: use %pISc for formatting IP addresses

The Linux kernel's printf functionality understands %pIS to means that
a the address in a 'struct sockaddr' should be formated, either as
IPv4 or IPv6.  For IPv6, the verbose format showing all 16 bytes
whether zero or not is used.

To get the more familiar "compressed" format where strings of :0000:
are replaced with ::, we need to add the 'c' flag.  This is ignored
for IPv4.

When requesting the port as well ("%pISp), the 'c' and 'p' can appear
in either order.

So this patch changes all %pIS to %pISc as we always want the
compressed format.

Test-Parameters: trivial
Signed-off-by: Mr NeilBrown <neilb@suse.de>
Change-Id: Ida17f5008e06a00c5460cf7161ed07de8fa7a65d
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/48685
Reviewed-by: James Simmons <jsimmons@infradead.org>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>