cleanup: move SSH class to its package
cleanup: extract PopupHostKeyVerifier class
cleanup: extract ExecCommandThread class
cleanup: refactor ssh package
cleanup: remove unused code
cleanup: rename ssh classes
cleanup: white space changes
cleanup: extract classes in SSH package
cleanup: simplify exec command methods
cleanup: move data classes to new packages
cleanup: remove DRBD installation data from the Host class
cleanup: remove some comments, rename variables and white space changes
cleanup the pom file
add spring framework
remove ant's build.xml
remove some library sources
pom.xml remove jar plugin
disable jung library in pom.xml
cleanup: formatting and comments
disable spring logging