DRILL-926: Index out of bound exception when creating outgoing filter record batch when incoming SV mode is NONE.
DRILL-925: fix issues with dynamic memory allocation
add servlets to expose server level metrics.
Added 'extlib' folder which will contain 3rd party jars which override jars from other (Hadoop, HBase) projects.
Do not uppercase storage plugin configuration names.
Curator needs to be started before ServiceCache can be built.
Logging to track allocator initial reservation