synchronize: allow ansible_ssh_host to be templated

This is already enabled in the runner also.
Fixed false positive on initctl as enable_cmd

Also on update-rc.d
In service module
Swapped conditions of the changed if statements
Missing "is" in file module description
added more usefull example for jinja2 overrides (this one is actually
used)

Signed-off-by: Brian Coca <briancoca+dev@gmail.com>
added descriptions for yum options

Updated main description to state that the yum module will handle package groups.  Added descriptions for each example, as it is unclear to (some) users that @Name implies a group install.
Merge pull request #5425 from mmoya/docfix

Missing "is" in file module description
Merge pull request #5427 from bcoca/template_docs2

added more usefull example for jinja2 overrides
Merge branch 'devel' of git://github.com/beefsalad/ansible into devel
Use task names in examples.
make examples/DOCUMENTATION.yml a link
include short_description in the module page's title
fix short/full description for elasticache
Add contents to various pages with more than one topic per page.
Fix some small docsite formatting things.
Fix a intra-doc link.
Add topics index to installation page.
Fix documentation example for the fail module

The example for the fail module doesn't work:
  http://www.ansibleworks.com/docs/modules.html#fail

The current text shows:
    - fail: msg="The system may not be provisioned according to the CMDB status."
      when: "{{ cmdb_status }} != 'to-be-staged'"

The "when" documentation indicates that the argument is already a Jinja2
expression:
  http://www.ansibleworks.com/docs/playbooks_conditionals.html#the-when-statement

Thus, the following is
      when: cmdb_status != "to-be-staged"

is preferred even though the following could work but generates a
deprecation warning:
      when: {{cmdb_status != "to-be-staged"}}
fix various documentation xrefs
Merge pull request #5436 from jkleckner/fix-fail-doc-example

Fix documentation example for the fail module