Add Stéphane's changes to get the certificate from freeIPA on the
machine
- Check and Use certificates path defined in CCM
- Added 'use_ssl' in the CCM schemas
- If use_ssl is true, extract certificates from IPA
add check for absolute path in CCM certs variables
code optimization
- add "extract_x509" boolean (default : false) to run the extraction in
the hook schema
- use a function to extract certificates
code style
Merge pull request #81 from samary/freeipa_cert_fix

Get the certificate from freeIPA