BIGTOP-1037. Provide a mechanism to control the sourcing of defaults files
BIGTOP-1051. Spark archive should come in tar.gz format
BIGTOP-1045. Being consistent with shells, defining JAVA_HOME and bigtop-utils versions
BIGTOP-1053. Bump version of Hadoop to 2.0.6-alpha
BIGTOP-1055. Spark package doesn't create PREFIX/bin directory and sets wrong permissions
BIGTOP-932. Allow puppet recipes to automatically pull in needed files from web
BIGTOP-1052. Increase environment configurability/debugging of Mahout Tests (jay vyas via rvs)