Add missing `scm` property in configuration screen #2174

Job	Run time
firefox-container / DetailsTabUiTest	6m 22s
chrome-container / DetailsTabUiTest	6m 23s
firefox-container / FreeStyleConfigurationUiTest	2m 6s
chrome-container / FreeStyleConfigurationUiTest	2m 5s
firefox-container / GlobalConfigurationUiTest	3m 7s
chrome-container / GlobalConfigurationUiTest	2m 54s
firefox-container / IssuesColumnUiTest	3m 3s
chrome-container / IssuesColumnUiTest	2m 50s
firefox-container / SnippetGeneratorUiTest	4m 4s
chrome-container / SnippetGeneratorUiTest	3m 59s
firefox-container / TrendChartsUiTest	2m 36s
chrome-container / TrendChartsUiTest	2m 49s
firefox-container / WarningsPluginUiTest	6m 6s
chrome-container / WarningsPluginUiTest	5m 47s
firefox-container / SmokeTests	4m 28s
chrome-container / SmokeTests	4m 17s
	1h 2m 56s

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