Added role to host global vars to all other roles. Updated tasks tittles to solve issue707. #1936

Job	Run time
pre-commit_and_sanity / markdown-link-check	58s
pre-commit_and_sanity / sanity / ansible stable-2.13 sanity	1m 18s
pre-commit_and_sanity / pre-commit / pre-commit	2m 2s
pre-commit_and_sanity / sanity / ansible stable-2.14 sanity	1m 22s
pre-commit_and_sanity / sanity / ansible stable-2.15 sanity	1m 35s
pre-commit_and_sanity / sanity / ansible milestone sanity	1m 28s
pre-commit_and_sanity / sanity / ansible devel sanity	1m 13s
pre-commit_and_sanity / all_green	3s
	9m 59s

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