Fixing ssl_cert task error message

If you run `rake ssl_cert` without arguments it fails on .gsub method, 
this should be done after the check 
Bump the version number for 11.6.0.rc.3
Regenerate docs for 11.6.0.rc.3
[CHEF-4380] Fix missing include on shellout mixin
Merge pull request #900 from opscode/CHEF-4380

[CHEF-4380] Fix missing include on shellout mixin
Bump chef version to 11.6.0.rc.4
Regenerate docs for 11.6.0.rc.4
Bump version to 11.6.0 for GA Release
Fix CHEF-4419 by appending a drive letter from the current working directory to the path if it starts with '/' in the most common code path we're encountering this issue.
get first gem.bat in path rather than last
Merge pull request #926 from opscode/CHEF-4419

CHEF-4419: Absolute file paths with no drive letter for file resources on Windows fails chef-client run
Add provider based test filters for functional tests
Add functional tests for (apt) package resource

Repro/regression test for CHEF-4406 included but is marked pending.
Fix bad const. ref in deprecation/provider/template

Fixes CHEF-4406 http://tickets.opscode.com/browse/CHEF-4406

Calls to Chef::Provider::Template#template_location and #template_finder
will now correctly reference the Chef::Provider::TemplateFinder class.
Chef::Provider::Package#preseed_resource uses these methods expecting an
error to be raised only if there is no template with the desired name,
which triggers a fallback to cookbook_file-based preseed files.

This patch restores the template-based preseed functionality, but will
trigger deprecation warnings from within Chef::Provider::Package's
internal code.
Standardize on `:arch` for architecture-based filtering

Fixes test failures on 32 bit platforms by correctly filtering 64
bit-only tests
Merge branch 'CHEF-4406-11-stable' into 11-stable

Minimal fix for CHEF-4406 suitable for hotfix/patch release
CHEF-4422 Truncate cache paths for remote files to stay within file system path length limits
Use constants instead of lets for semantically constant symbols
Add expectation of no exception for simple save case
Restore config after tests are done