cloud-setup: don't require delimiter in 'nmcs_utils_hwaddr_normalize'

Azure gives make address without delimiter. So, make the normalize function
more liberal so that it can accept this format.
20 jobs for ss/with-delimiter in 47 minutes and 55 seconds (queued for 3 seconds)
latest
Status Job ID Name Coverage
  Test
passed #3608681
checkpatch

00:02:09

manual #3608688
allowed to fail manual
t_centos:7.5.1804
manual #3608689
allowed to fail manual
t_centos:7.6.1810
manual #3608690
allowed to fail manual
t_centos:7.7.1908
manual #3608691
allowed to fail manual
t_centos:7.8.2003
manual #3608692
allowed to fail manual
t_centos:8.1.1911
manual #3608698
allowed to fail manual
t_debian:10
manual #3608697
allowed to fail manual
t_debian:9
manual #3608700
allowed to fail manual
t_debian:sid
manual #3608699
allowed to fail manual
t_debian:testing
manual #3608682
allowed to fail manual
t_fedora:28
manual #3608683
allowed to fail manual
t_fedora:29
manual #3608684
allowed to fail manual
t_fedora:30
passed #3608685
t_fedora:31

00:47:55

manual #3608686
allowed to fail manual
t_fedora:32
manual #3608687
allowed to fail manual
t_fedora:rawhide
manual #3608693
allowed to fail manual
t_ubuntu:16.04
manual #3608694
allowed to fail manual
t_ubuntu:18.04
manual #3608696
allowed to fail manual
t_ubuntu:devel
manual #3608695
allowed to fail manual
t_ubuntu:rolling