relocate docker

Signed-off-by: rootfs <hchen@redhat.com>
add vagrant recipe to deploy tachyon cluster on virtualbox and aws

Signed-off-by: rootfs <hchen@redhat.com>
doc and check that vagrant version 1.6.5 is required
review feedback:change image name from TachyonSlave to TachyonWorker
remove unused Exceptions in WorkerStorage
review feedback: not use aws subnet_id right now

Signed-off-by: rootfs <hchen@redhat.com>
format code
Merge pull request #488 from shimingfei/RemoveUnusedExceptions

remove unused Exceptions in WorkerStorage and format the code
set jetty thread count to 9

Set jetty thread count from 5 to 9 to avoid the bug mentioned in
[TACHYON-196]
Merge pull request #492 from PasaLab/TACHYON-196

[TACHYON-196] Set jetty thread count to 9
review feedback: remove obsolete comment

Signed-off-by: rootfs <hchen@redhat.com>
Merge pull request #486 from rootfs/vagrant-short

[TACHYON-127] Deploy Tachyon Cluster through Vagrant
Merge remote-tracking branch 'upstream/master' into tachyon-perf-test