(MODULES-4213) Allow global rewrite rules inheritance in vhosts

[EmersonPrado]

Apache module rewrite allows virtual hosts to inherit global rules
if their conf files contain the directive "RewriteOptions Inherit"
among rewrite rules

This change includes this directive depending on a boolean parameter
in apache::vhost class - rewrite_inherit - which defaults to false

[bmjen]

Thanks @EmersonPrado ! Can you update the README and add a spec test for the new parameter?

[EmersonPrado]

@bmjen I added a README and a spec test, but:

1. I tend to overkill at READMEs. Feel absolutely free to criticize.
2. I'm absolutely clueless on spec tests. I copied, pasted and edited what I think is right in the vhost defined type test. And I can't test it on my workstation, because it requires puppet-blacksmith, which is only installable by gem, and I'm behind a proxy. I just can't make it work. So I'll do some trial and error passes on this specs. Maybe I get something.

[EmersonPrado]

@bmjen Gave up completely on spec testing a file content added by template. I don't even know if spec tests can do that. How can I back off to commit 7d977e7?

[bmjen]

@EmersonPrado No Problem! I will just squash it all, and I'll add something simple to the test case in a separate PR.