Added nf-tests to iphop modules #6598

Job	Run time
pytest-changes	5s
prettier	45s
pre-commit	11s
editorconfig	13s
nf-test-changes	5s
nf-test (iphop/download, conda)	22m 5s
nf-core-lint (iphop/download)	47s
nf-test (iphop/download, docker)	11m 5s
nf-core-lint (iphop/predict)	51s
nf-test (iphop/download, singularity)	10m 20s
pytest	0s
nf-test (iphop/predict, conda)	9m 34s
nf-test (iphop/predict, docker)	11m 34s
nf-test (iphop/predict, singularity)	11m 3s
confirm-pass	1s
	1h 18m 39s

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