Merge pull request #512 from hhovsepy/sam-1.3

integrated oldest SAM with LDAP before upgrade, an 	added more tests, new functionality to retrieve the latest output property in list
new test: dropping RHEV-M instances in katello.{server,client}.hostname sys.props
new test: dropping RHEV-M instances in katello.{server,client}.hostname sys.props
null specified for scp command: takes the default localhost :/
sleep for some 5 sec between dangerous operations.
Added test cases to add already existing system and to remove invalid systems from a system group
weird: install of ddns rpm removes 69.pem for RHEL 6.2 archs
Merge pull request #514 from ab268/sam-1.3

Added test cases to add already existing system and to remove invalid systems from a system group
added new scenarios for bug 1001609
Merge branch 'sam-1.3' of https://github.com/gkhachik/katello-api into sam-1.3