dcsstart not starting all connections.

Closes Bug 1330578

1) Added "-n" option while doing ssh in background
2) Made selection of DCS server info port automatic to avoid port
clashes.
3) Changed default directory where PID files are stored to
$DCS_HOME/tmp. This will help in stopping dcs on systems where
/tmp is cleaned periodically.
4) Changed default HEAP_SIZE to 128M from 1000M.
5) Added newline in default conf/servers file shipped

Change-Id: Iab54849b31f3e024b885d60c34e69d6245f93207