Signed-off-by: Madhan Neethiraj <madhan@apache.org>

ATLAS-2075: notification enhancement to handle large messages, using compression and multi-part messages

(cherry picked from commit 99243ee8e18656acd72601468c99e7781a0b04f7)

Change-Id: I07cbe1955cd08005660f5189f30f0690809ce1b1
Signed-off-by: Madhan Neethiraj <madhan@apache.org>

ATLAS-1908: updated NotificationConsumer with a method removed earlier to avoid breaking existing usage (like in Ranger)

Change-Id: Ib8a7f338da7fd0f710fc683da87871e3d9c32035
Signed-off-by: Madhan Neethiraj <madhan@apache.org>

ATLAS-1908: updated to use existing Kafka consumer properties when equivalent new Kafka consumer properties are not present
Signed-off-by: Madhan Neethiraj <madhan@apache.org>

ATLAS-1766: updated NotificationConsumer implementation to use new Kafka Consumer API, to enable support for SASL_SSL protocol
Signed-off-by: Madhan Neethiraj <madhan@apache.org>

ATLAS-1111 Data loss is observed when atlas is restarted while hive_table metadata ingestion into kafka topic is in-progress(shwethags via sumasai)

ATLAS-629 Kafka messages in ATLAS_HOOK might be lost in HA mode at the instant of failover. (yhemanth)

ATLAS-511 Ability to run multiple instances of Atlas Server with automatic failover to one active server (yhemanth via shwethags)

ATLAS-346 Atlas server loses messages sent from Hive hook if restarted after unclean shutdown (yhmenath via sumasai)

ATLAS-300 Need additional integration test coverage for entity notifications (tbeerbower via shwethags)