Add TACHYON_MASTER_JAVA_OPTS for Master and TACHYON_WORKER_JAVA_OPTS for Worker to the default TACHYON_JAVA_OPTS.
Update comment in the env template file.
Add JAVA_OPTS for Master and Worker for the GlusterFS.
Merge pull request #250 from hsaputra/separate_JAVA_OPTS_for_Master_and_Worker

Add TACHYON_MASTER_JAVA_OPTS for Master and TACHYON_WORKER_JAVA_OPTS