Fix SHA256 checksum for nginx 1.4.4
Merge pull request #305 from irontoby/master

Fix SHA256 checksum for nginx 1.4.4
CHANGELOG.md update [ci skip]
Move aside 'conf.d/default.conf' to enable cookbook default.
Update metadata.rb build number to 2.7.5, to avoid upstream tag conflicts.
Activate attribute default_site_pkg_disabled to disable conf.d/default.conf by default.