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/hash/roles/test_hash_behavior/meta/main.yml

@@ -15,4 +15,3 @@
 #
 # You should have received a copy of the GNU General Public License
 # along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
-

test/integration/targets/hash/roles/test_hash_behavior/tasks/main.yml

@@ -19,13 +19,13 @@
 - name: get the hash behavior env setting
   shell: env | grep ^ANSIBLE_HASH_BEHAVIOUR'=' | cut -f2- -d'='
   register: hash_behavior
-  # This only works with the local connection.  The way this test is run means the 
+  # This only works with the local connection.  The way this test is run means the
   connection: local
   delegate_to: localhost
 
 
 - name: debug hash behavior result
-  debug: var=hash_behavior.stdout 
+  debug: var=hash_behavior.stdout
 
 - name: assert hash behavior is merge or replace
   assert:
@@ -39,4 +39,3 @@
   assert:
     that:
     - "hash_behavior.stdout == 'merge' and test_hash == merged_hash or hash_behavior.stdout == 'replace' and test_hash == replaced_hash"
-