Reorganize integration tests:

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

test/legacy/roles/ec2_elb_instance_setup/tasks/main.yml

@@ -0,0 +1,19 @@
+---
+# tasks file for ec2_elb_setup
+
+# ============================================================
+# install apache on the ec2 instances
+
+- name: install apache on new ec2 instances
+  package: name=httpd
+  when: ansible_os_family == 'RedHat'
+
+- name: install apache on new ec2 instances
+  package: name=apache
+  when: ansible_os_family == 'Debian'
+
+- name: start and enable apache
+  service: name=httpd state=started enabled=yes
+
+- name: create an index.html landing page
+  copy: dest=/var/www/html/index.html src=index.html owner=root group=root mode=0644