ATLAS-1232: added preCreate(), preDelete() in typedef persistence, to enable edge creation for references in a later stage

Signed-off-by: Suma Shivaprasad <sumasai.shivaprasad@gmail.com>

ATLAS-1210 patch file to add position attribute to hive_column type (sarath.kum4r@gmail.com via sumasai)

ATLAS-1203 'Invalid type definition' due to no new types to be created at startup (mneethiraj via shwethags)

ATLAS-1174 Framework to apply updates to types in the type-system (sarath.kum4r@gmail.com via shwethags)

ATLAS-1098 Atlas allows creation of tag with name isa which causes exceptions during search (apoorvnaik via shwethags)

ATLAS-1098 Atlas allows creation of tag with name isa which causes exceptions during search (apoorvnaik via kevalbhatt)

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-1087 Provide an option to turn off persisting entity definition in audits (sumasai, shwethags)

ATLAS-1060 Add composite indexes for exact match performance improvements for all attributes (sumasai via shwethags)

ATLAS-1042 Performance improvement changes for propertykey+typeName based queries (sumasai via shwethags)

ATLAS-998 determine HA mode from property atlas.server.ids, instead of atlas.server.ha.enabled (madhan.neethiraj via shwethags)

ATLAS-986 Ability to differentiate business catalog terms from traits (sumasai,svimal2106 via shwethags)