Support SSL authentication per Yum repos
Configure the skip_if_unavailable field.

We may need to skip repositories if the authentication to the Yum server
fails.

It is false by default, as with Yum's standards.
Trivial fixes to the POM file.
Create a managed_files directory.

For compatibility with previous releases.
Fix the RPM queries in ncm-gpfs
Don't override files if the rendering fails.

Otherwise we may corrupt and bring down services.
Merge pull request #28 from piojo/sslrepos

Support SSL authentication per Yum repos
Merge pull request #35 from piojo/profile-dirs

Re-create the managed_files directory in ncm-profile
Make whitespaces consistent.

(Just M-x untabify)
Merge pull request #41 from piojo/metaconfig-nocorrupt

Don't override files if the rendering module fails
Merge pull request #38 from piojo/gpfs-fix

Fix RPM queries.