Reworking v2 play iterator and fixing some other bugs

Still not working quite right:
* dynamic includes are not adding the included tasks yet
* running roles with tags not quite working right

v2/samples/include.yml

@@ -0,0 +1,4 @@
+- debug: msg="this is the include, a=={{a}}"
+- debug: msg="this is the second debug in the include"
+- debug: msg="this is the third debug in the include, and a is still {{a}}"
+

v2/samples/localhosts

@@ -0,0 +1,3 @@
+l1 ansible_ssh_host=127.0.0.1
+l2 ansible_ssh_host=127.0.0.2
+l3 ansible_ssh_host=127.0.0.3

v2/samples/roles/common/tasks/main.yml

@@ -0,0 +1 @@
+- debug: msg="this is a task from the common role"

v2/samples/roles/role_a/meta/main.yml

@@ -0,0 +1,2 @@
+dependencies:
+- common

v2/samples/roles/role_a/tasks/main.yml

@@ -0,0 +1 @@
+- debug: msg="this is a task from role A"

v2/samples/roles/role_b/meta/main.yml

@@ -0,0 +1,2 @@
+dependencies:
+- common

v2/samples/roles/role_b/tasks/main.yml

@@ -0,0 +1 @@
+- debug: msg="this is a task from role B"

v2/samples/roles/test_role/meta/main.yml

@@ -0,0 +1,2 @@
+dependencies:
+  - test_role_dep

v2/samples/roles/test_role/tasks/main.yml

@@ -1 +1,3 @@
 - debug: msg="here we are in the role, foo={{foo}}"
+- fail:
+  when: foo != "bar"

v2/samples/roles/test_role_dep/tasks/main.yml

@@ -0,0 +1 @@
+- debug: msg="here we are in the role dependency"

v2/samples/test_block.yml

@@ -1,17 +1,20 @@
-- hosts: localhost
+- hosts: all
   connection: local
-  gather_facts: no
+  gather_facts: yes
   tasks:
   - block:
-      - command: /bin/false
-      - debug: msg="you shouldn't see me"
+      - debug: msg="this is the first task"
+      - fail:
+        when: inventory_hostname == "l2"
+      - debug: msg="only l1 and l3 should see me"
     rescue:
       - debug: msg="this is the rescue"
       - command: /bin/false
-      - debug: msg="you shouldn't see this either"
+      - debug: msg="no host should see this run"
     always:
       - debug: msg="this is the always block, it will always be seen"
     when: foo|default('') != "some value"
     tags:
       - foo
       - bar
+  - debug: msg="you should only see l1 and l3 run this"

v2/samples/test_blocks_of_blocks.yml

@@ -0,0 +1,8 @@
+- hosts: localhost
+  gather_facts: no
+  tasks:
+  - block:
+    - block:
+      - block:
+        - block:
+          - debug: msg="are we there yet?"

v2/samples/test_include.yml

@@ -0,0 +1,26 @@
+- hosts: localhost
+  gather_facts: no
+  tasks:
+  - block:
+    - include: include.yml
+      when: 1 == 2
+    - include: include.yml a=1
+      when: 1 == 1
+      notify: foo
+    - include: include.yml a={{item}}
+      with_items:
+      - foo
+      - bar
+      - bam
+    - fail:
+
+    #rescue:
+    #- include: include.yml a=rescue
+
+    always:
+    - include: include.yml a=always
+
+  handlers:
+  - name: foo
+    include: include.yml a="this is a handler"
+

v2/samples/test_role.yml

@@ -1,4 +1,5 @@
-- hosts: ubuntu1404
+- hosts: localhost
+  connection: local
   gather_facts: no
   vars:
     foo: "BAD!!"

v2/samples/test_roles_complex.yml

@@ -0,0 +1,6 @@
+- hosts: localhost
+  gather_facts: no
+  roles:
+  - { role: role_a, tags: A, when: skip != "A" }
+  - { role: role_b, tags: B, when: skip != "B" }
+