rgw/lc: use flag and named constants instead of booleans as argument in interface

rgw/lc: use flag and named constants instead of booleans as argument in interface

Signed-off-by: Juan Zhu <jzhu4@dev-10-34-20-139.pw1.bcc.bloomberg.com>
(cherry picked from commit 17ca50e70421cfe263784e8d65008145221e41c3)

Conflicts:
	src/rgw/driver/d4n/rgw_sal_d4n.cc
	src/rgw/driver/d4n/rgw_sal_d4n.h
	src/rgw/driver/posix/rgw_sal_posix.cc
	src/rgw/driver/posix/rgw_sal_posix.h
	src/rgw/driver/rados/rgw_bucket.cc
	src/rgw/driver/rados/rgw_putobj_processor.cc
	src/rgw/driver/rados/rgw_putobj_processor.h
	src/rgw/driver/rados/rgw_rados.cc
	src/rgw/driver/rados/rgw_sal_rados.cc
	src/rgw/driver/rados/rgw_sal_rados.h
	src/rgw/rgw_data_access.cc
	src/rgw/rgw_lc.cc
	src/rgw/rgw_op.cc
	src/rgw/rgw_sal.h
	src/rgw/rgw_sal_daos.cc
	src/rgw/rgw_sal_daos.h
	src/rgw/rgw_sal_dbstore.cc
	src/rgw/rgw_sal_dbstore.h
	src/rgw/rgw_sal_filter.cc
	src/rgw/rgw_sal_filter.h
	src/rgw/rgw_sal_motr.cc
	src/rgw/rgw_sal_motr.h