Issue #2863437 by maxocub, masipila: Migrate Drupal 7 title data to Drupal 8

.../modules/comment/src/Plugin/migrate/source/d7/Comment.php

...omment/tests/src/Kernel/Migrate/d7/MigrateCommentTest.php

...tests/src/Kernel/Plugin/migrate/source/d7/CommentTest.php

core/modules/field/src/Plugin/migrate/source/d7/Field.php

...ules/field/src/Plugin/migrate/source/d7/FieldInstance.php

.../tests/src/Kernel/Migrate/d7/MigrateFieldInstanceTest.php

...es/field/tests/src/Kernel/Migrate/d7/MigrateFieldTest.php

core/modules/migrate_drupal/tests/fixtures/drupal7.php

core/modules/migrate_drupal_ui/src/Form/ReviewForm.php

...s/src/Functional/d7/MigrateUpgrade7NoMultilingualTest.php

...tests/src/Functional/d7/MigrateUpgrade7ReviewPageTest.php

...drupal_ui/tests/src/Functional/d7/MigrateUpgrade7Test.php

core/modules/node/src/Plugin/migrate/source/d7/Node.php

...de/src/Plugin/migrate/source/d7/NodeEntityTranslation.php

...ules/node/tests/src/Kernel/Migrate/d7/MigrateNodeTest.php

...el/Plugin/migrate/source/d7/NodeEntityTranslationTest.php

...de/tests/src/Kernel/Plugin/migrate/source/d7/NodeTest.php

...c/Kernel/Plugin/migrate/source/d7/NodeTranslationTest.php

core/modules/taxonomy/src/Plugin/migrate/source/d7/Term.php

...y/tests/src/Kernel/Migrate/d7/MigrateTaxonomyTermTest.php