nm-cloud-setup-utils: fix nmcs_utils_poll argument ordering

the order of the arguments in the header and C file did not match
20 jobs for frazer/nm-cloud-setup-utils in 28 minutes and 57 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Test
passed #3578867
checkpatch

00:01:08

manual #3578874
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t_centos:7.5.1804
manual #3578875
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t_centos:7.6.1810
manual #3578876
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t_centos:7.7.1908
manual #3578877
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t_centos:7.8.2003
manual #3578878
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t_centos:8.1.1911
manual #3578884
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t_debian:10
manual #3578883
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t_debian:9
manual #3578886
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t_debian:sid
manual #3578885
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t_debian:testing
manual #3578868
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t_fedora:28
manual #3578869
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t_fedora:29
manual #3578870
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t_fedora:30
passed #3578871
t_fedora:31

00:28:57

manual #3578872
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t_fedora:32
manual #3578873
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t_fedora:rawhide
manual #3578879
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t_ubuntu:16.04
manual #3578880
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t_ubuntu:18.04
manual #3578882
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t_ubuntu:devel
manual #3578881
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t_ubuntu:rolling