Fix cosmetic problems in YAML source

This change corrects problems reported by the `yamllint` linter.

Since key duplication problems were removed in 4d48711, this commit
mainly fixes trailing spaces and extra empty lines at beginning/end of
files.

test/integration/targets/includes/roles/test_includes/handlers/main.yml

@@ -1,2 +1 @@
 - include: more_handlers.yml
-

test/integration/targets/includes/roles/test_includes/handlers/more_handlers.yml

@@ -10,5 +10,3 @@
       - "ca == 4001"
       - "cb == 4002"
       - "cc == 4003"
-
-

test/integration/targets/includes/roles/test_includes/tasks/included_task1.yml

@@ -1,10 +1,9 @@
-- set_fact: 
+- set_fact:
     ca: "{{ a }}"
 - debug: var=ca
-- set_fact: 
+- set_fact:
     cb: "{{b}}"
 - debug: var=cb
 - set_fact:
     cc: "{{ c }}"
 - debug: var=cc
-

test/integration/targets/includes/roles/test_includes/tasks/main.yml

@@ -26,7 +26,7 @@
       - "cb == '2'"
       - "cc == '3'"
 
-- set_fact: 
+- set_fact:
      a: 101
      b: 102
      c: 103
@@ -34,7 +34,7 @@
 - include: included_task1.yml a={{a}} b={{b}} c=103
 
 - name: verify variable include params
-  assert: 
+  assert:
     that:
       - "ca == 101"
       - "cb == 102"
@@ -80,5 +80,3 @@
     # both these via a handler include
     - included_handler
     - verify_handler
-
-

test/integration/targets/includes/test_includes2.yml

@@ -1,8 +1,7 @@
-
 - name: verify playbook includes can take parameters
   hosts: testhost
   tasks:
-    - assert: 
+    - assert:
         that:
           - "parameter1 == 'asdf'"
           - "parameter2 == 'jkl'"
@@ -10,7 +9,7 @@
 - name: verify task include logic
   hosts: testhost
   gather_facts: True
-  roles: 
+  roles:
     - { role: test_includes, tags: test_includes }
   tasks:
     - include: roles/test_includes/tasks/not_a_role_task.yml