Do not replace lo0 address on Solaris

lo0 and lo0:0 are the same interface on Solaris.  Make sure
bin/tests/system/ifconfig.sh does not touch lo0:0 in order to prevent it
from changing the address of the loopback interface on Solaris.
16 jobs for 419-do-not-replace-lo0-address-on-solaris in 8 minutes and 15 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Precheck
passed precheck:debian:sid:amd64 #24925
amd64 docker linux

00:00:13

 
  Build
passed build:centos:centos6:amd64 #24926
amd64 docker linux

00:02:18

passed build:centos:centos7:amd64 #24927
amd64 docker linux

00:02:26

passed build:clang:debian:sid:amd64 #24928
amd64 docker linux

00:02:56

passed build:clang:debian:sid:i386 #24930
i386 docker linux

00:03:14

passed build:debian:sid:amd64 #24929
amd64 docker linux

00:01:45

passed build:debian:sid:i386 #24931
i386 docker linux

00:01:29

 
  Test
passed systemtest:centos:centos6:amd64 #24937
amd64 docker linux

00:04:40

passed systemtest:centos:centos7:amd64 #24938
amd64 docker linux

00:04:35

passed systemtest:debian:sid:amd64 #24939
amd64 docker linux

00:04:36

passed systemtest:debian:sid:i386 #24940
i386 docker linux

00:04:45

passed unittest:centos:centos6:amd64 #24932
amd64 docker linux

00:00:58

passed unittest:centos:centos7:amd64 #24933
amd64 docker linux

00:00:59

passed unittest:clang:debian:sid:amd64 #24935
amd64 docker linux

00:00:51

passed unittest:debian:sid:amd64 #24934
amd64 docker linux

00:00:51

passed unittest:debian:sid:i386 #24936
i386 docker linux

00:00:48