MCOL-5013: Load Data from S3 into Columnstore

Introduced UDF and stored prodecure.
usage:

set columnstore_s3_key='<s3_key>';
set columnstore_s3_secret='<s3_secret>';
set columnstore_s3_region='region';

and then use UDF
select columnstore_dataload("<tablename>", "<filename>", "<bucket>", "<db_name>");
for UDF db_name can be ommited, then current connection db will be used

or stored function
call calpontsys.columnstore_load_from_s3("<tablename>", "<filename>", "<bucket>", "<db_name>");

dbcon/mysql/CMakeLists.txt

@@ -6,6 +6,8 @@ include_directories( ${ENGINE_COMMON_INCLUDES}
                      ${SERVER_SOURCE_ROOT_DIR}/storage/maria )
 
 SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/../../../)
+SET(S3API_DEPS marias3 curl CACHE INTERNAL "S3API_DEPS")
+
 
 SET ( libcalmysql_SRCS
     ../../datatypes/mcs_datatype.cpp
@@ -31,7 +33,9 @@ SET ( libcalmysql_SRCS
     is_columnstore_tables.cpp
     is_columnstore_columns.cpp
     is_columnstore_files.cpp
-    is_columnstore_extents.cpp)
+    is_columnstore_extents.cpp
+    columnstore_dataload.cpp)
+
 
 set_source_files_properties(ha_mcs.cpp PROPERTIES COMPILE_FLAGS "-fno-implicit-templates")
 
@@ -39,9 +43,9 @@ if (COMMAND mysql_add_plugin)
   IF(NOT(RPM OR DEB))
     SET(disabled DISABLED)
   ENDIF()
-  
+
   mysql_add_plugin(columnstore ${libcalmysql_SRCS} STORAGE_ENGINE MODULE_ONLY ${disabled}
-      LINK_LIBRARIES ${ENGINE_LDFLAGS} ${ENGINE_WRITE_LIBS} ${NETSNMP_LIBRARIES} threadpool
+      LINK_LIBRARIES ${ENGINE_LDFLAGS} ${ENGINE_WRITE_LIBS} ${NETSNMP_LIBRARIES} ${S3API_DEPS} threadpool
       VERSION ${PACKAGE_VERSION}
       COMPONENT columnstore-engine CONFIG columnstore.cnf)
 else ()
@@ -49,23 +53,24 @@ else ()
     SET_TARGET_PROPERTIES(ha_columnstore PROPERTIES PREFIX "")
 
     add_dependencies(ha_columnstore loggingcpp)
+    add_dependencies(ha_columnstore ${S3API_DEPS})
     add_definitions(-DMYSQL_DYNAMIC_PLUGIN -DPLUGIN_COLUMNSTORE_VERSION="${PACKAGE_VERSION}")
-    
-    target_link_libraries(ha_columnstore ${ENGINE_LDFLAGS} ${ENGINE_WRITE_LIBS} ${NETSNMP_LIBRARIES} ${SERVER_BUILD_DIR}/libservices/libmysqlservices.a threadpool)
+
+    target_link_libraries(ha_columnstore ${S3API_DEPS} ${ENGINE_LDFLAGS} ${ENGINE_WRITE_LIBS} ${NETSNMP_LIBRARIES} ${SERVER_BUILD_DIR}/libservices/libmysqlservices.a threadpool)
 
     install(TARGETS ha_columnstore DESTINATION ${MARIADB_PLUGINDIR} COMPONENT columnstore-engine)
-    
+
     # define this dummy target for standalone builds (ie, when mysql_add_plugin doesn't exist)
-    add_custom_target(columnstore DEPENDS ha_columnstore) 
+    add_custom_target(columnstore DEPENDS ha_columnstore)
     install(FILES columnstore.cnf DESTINATION ${MARIADB_MYCNFDIR} COMPONENT columnstore-engine)
 endif ()
 
 if (TARGET columnstore)
-    install(FILES syscatalog_mysql.sql 
-                  dumpcat_mysql.sql 
-                  calsetuserpriority.sql 
-                  calremoveuserpriority.sql 
-                  calshowprocesslist.sql 
+    install(FILES syscatalog_mysql.sql
+                  dumpcat_mysql.sql
+                  calsetuserpriority.sql
+                  calremoveuserpriority.sql
+                  calshowprocesslist.sql
                   columnstore_info.sql
                   DESTINATION ${ENGINE_SUPPORTDIR} COMPONENT columnstore-engine)
     install(PROGRAMS install_mcs_mysql.sh