XD-721 Test Job Module addition after XD Start
Fix NPE at shell utils

 - Add null check on Table and UiUtils where the value properties are
evaluated.
XD-2105: Make SI property accessors available to bus partition selection
XD-2105 polishing
XD-1519 Adds missing Job Registry schema files allowing to use GemfireXD and Derby-style databases as main Spring XD storage.

Added files is a copy of MySQL schema files. Works fine with GemfireXD 1.3.0.
#1184
XD-1519 Parameterize transaction isolation level used by Spring Batch