Use new input helpers everywhere, move them to enzyme_utils

frontend/test/__support__/enzyme_utils.js

frontend/test/__support__/integrated_tests.js

frontend/test/admin/databases/DatabaseListApp.integ.spec.js

frontend/test/admin/datamodel/FieldApp.integ.spec.js

frontend/test/admin/datamodel/datamodel.integ.spec.js

...dmin/settings/SettingsAuthenticationOptions.integ.spec.js

frontend/test/dashboard/dashboard.integ.spec.js

frontend/test/home/HomepageApp.integ.spec.js

...modes/actions/SummarizeBySegmentMetricAction.unit.spec.js

frontend/test/parameters/parameters.integ.spec.js

.../query_builder/components/dataref/FieldPane.integ.spec.js

...query_builder/components/dataref/MetricPane.integ.spec.js

...uery_builder/components/dataref/SegmentPane.integ.spec.js

frontend/test/query_builder/query_builder.integ.spec.js

frontend/test/reference/databases.integ.spec.js