Reduce deb and war sizes

Makes hive packing to provided. Did not make hadoop packaging to provided, because we need only hadoop-core.jar and have to skip everything else. We cannot put HADOOP_HOME/lib directly because the many jars would clash. So, right now bundling hadoop-core jar in the packages.

No HADOOP_HOME or HIVE_HOME is required for client package.

Newer sizes are : 
13M  grill-client_1.0.0-SNAPSHOT.deb
45M  grill-server_1.0.0-SNAPSHOT.deb
22M  grill-server-1.0.0-SNAPSHOT.war