t_client.sh: correctly report all failed instances in summary

t_client.sh: correctly report all failed instances in summary

t_client.sh reports a summary at the end:

  Test sets succeeded: none.
  Test sets failed: 1 2 3 4 5.

for tests that are skipped due to the pre-test ping check ("vpn target
IP must not ping before VPN ist started") the script forgot to add
the instance number to the summary line.  Fixed.

Signed-off-by: Gert Doering <gert@greenie.muc.de>
Acked-by: Antonio Quartulli <antonio@openvpn.net>
Message-Id: <20200626082743.15397-1-gert@greenie.muc.de>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg20130.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>