Convert box/ suite to create/drop space.

test/box/lua.result

test/box/lua.test.py

test/box/lua_misc.result

test/box/lua_misc.test.lua

test/box/net.box.result

test/box/net.box.test.lua

test/box/reconfigure.result

test/box/reconfigure.test.py

test/box/session.result

test/box/session.test.lua

test/box/snapshot.result

test/box/snapshot.test.py

test/box/sql.result

test/box/sql.test.py

test/box/stat.result

test/box/stat.test.py

test/box/xlog.result

test/box/xlog.test.py