bugfix shark standalone: deploy to all hosts
temporarily disable mesos installation

spark 0.9.1 segfaults if mesos is present
set spark memory via SPARK_MEM (for 0.9.x)
set JAVA_HOME for shark 0.9.1
allow root to use shark
fix protobuf bug for shark 0.9.1 on CDH5
use spark 0.9.2 (for shark 0.9.1)
cleanup
bugfix hive installation
move ampcamp settings to group_vars/all

we store repackaged hive-exec jar for shark in same ampcamp container
TODO: extract swift settings to separate group
merge conflict resolved