UIMA-3829 Added new property to ducc.properties to define max gid. Modified rogue process detector to ignore processes owned by uid < max gid

git-svn-id: https://svn.apache.org/repos/asf/uima/sandbox/uima-ducc/trunk@1595971 13f79535-47bb-0310-9956-ffa450edef68
UIMA-3829 removed unused import

git-svn-id: https://svn.apache.org/repos/asf/uima/sandbox/uima-ducc/trunk@1595972 13f79535-47bb-0310-9956-ffa450edef68
UIMA-3830 Modified to spawn top command and scrape the output to collect CPU usage

git-svn-id: https://svn.apache.org/repos/asf/uima/sandbox/uima-ducc/trunk@1595976 13f79535-47bb-0310-9956-ffa450edef68
UIMA-3830 sum up memory used by processes owned by UID < max gid (500) and subtract it from the total memory available to the node.

git-svn-id: https://svn.apache.org/repos/asf/uima/sandbox/uima-ducc/trunk@1595981 13f79535-47bb-0310-9956-ffa450edef68