Reorganize integration tests:

- Move legacy tests into a separate directory.
- Reduce common dependencies between targets.

test/legacy/inventory

@@ -0,0 +1,55 @@
+[local]
+testhost ansible_ssh_host=127.0.0.1 ansible_connection=local
+testhost2 ansible_ssh_host=127.0.0.1 ansible_connection=local
+# For testing delegate_to
+testhost3 ansible_ssh_host=127.0.0.3
+testhost4 ansible_ssh_host=127.0.0.4
+# For testing fact gathering
+facthost[0:20] ansible_host=127.0.0.1 ansible_connection=local
+
+[binary_modules]
+testhost_binary_modules ansible_host=127.0.0.1 ansible_connection=local
+
+[local_group]
+kube-pippin.knf.local
+
+# the following inline declarations are accompanied
+# by (preferred) group_vars/ and host_vars/ variables
+# and are used in testing of variable precedence
+
+[inven_overridehosts]
+invenoverride ansible_ssh_host=127.0.0.1 ansible_connection=local
+
+[all:vars]
+extra_var_override=FROM_INVENTORY
+inven_var=inventory_var
+unicode_host_var=CaféEñyei
+
+[inven_overridehosts:vars]
+foo=foo
+var_dir=vars
+
+[arbitrary_parent:children]
+local
+
+[local:vars]
+parent_var=6000
+groups_tree_var=5000
+
+[arbitrary_parent:vars]
+groups_tree_var=4000
+overridden_in_parent=1000
+
+[arbitrary_grandparent:children]
+arbitrary_parent
+
+[arbitrary_grandparent:vars]
+groups_tree_var=3000
+grandparent_var=2000
+overridden_in_parent=2000
+
+[amazon]
+localhost ansible_ssh_host=127.0.0.1 ansible_connection=local
+
+[azure]
+localhost ansible_ssh_host=127.0.0.1 ansible_connection=local