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Closes#1256 from yanghua/KYUUBI-1252.
Closes#1252
8a41a298 [yanghua] Address review suggesion
c78a850d [yanghua] Address review suggesiont
e6aa86c2 [yanghua] Refactor code to address review suggestion
ed39d2dd [yanghua] [KYUUBI #1252] Move KyuubiConf#toSparkPrefixedConf out of kyuubi-common module
Authored-by: yanghua <yanghua1127@gmail.com>
Signed-off-by: Kent Yao <yao@apache.org>
f41cd30f64