fix a bug of using wildcard in make-distribution.sh; ask sbt to check local maven repo in SparkBuild.scala

fixed a wildcard bug in make-distribution.sh:
         move the wildcard out of the quotes

ask sbt to check local maven repo in SparkBuild.scala:
       sbt uses ivy which by default only checks ~/.ivy2. need to tell sbt to also check ~/.m2 because mesos make maven-install only publishes to ~/.m2