add sl4j facade;
add logback to poms
add exclussion for log4j and commons-loggin
Merge branch 'develop' into feature/34_logback

* develop:
  fix bug: add vdc at the end of hostname in tierinstance add new method to generate the name modify unit test and integration test

Conflicts:
	core/src/main/java/com/telefonica/euro_iaas/paasmanager/manager/async/impl/ApplicationInstanceAsyncManagerImpl.java
	core/src/main/java/com/telefonica/euro_iaas/paasmanager/manager/impl/EnvironmentInstanceManagerImpl.java
	core/src/main/java/com/telefonica/euro_iaas/paasmanager/manager/impl/InfrastructureManagerClaudiaImpl.java
	rest-api/src/main/java/com/telefonica/euro_iaas/paasmanager/rest/auth/OpenStackAuthenticationToken.java
add appenders for installator with sdc, infrastructure (openstack operations)
add rollingPolicy to logback;
fix tests, because after last merge were broken;
remove all System.out.println
modify path to rolling log files
Merge branch 'develop' into feature/34_logback

* develop:
  init db change
  user data update for ohai
  user data change
  changes for introducing the user data
  change the user data
  remove comments in initdb
  inclusion of user data class, the get chef-server and the introduction in the json

Conflicts:
	core/src/main/java/com/telefonica/euro_iaas/paasmanager/bootstrap/InitDbBootstrap.java
add configuration for org.apache.http logs;
modify levels
Merge pull request #35 from jesuspg/feature/34_logback

Feature/34 logback