cmake: build bluestore-tp before crimson-alienstore

cmake: build bluestore-tp before crimson-alienstore

to address the FTBFS of

src/os/bluestore/BlueStore.cc:52:10: fatal error: tracing/bluestore.h: No such file or directory
   52 | #include "tracing/bluestore.h"
      |          ^~~~~~~~~~~~~~~~~~~~~
compilation terminated.

tracing/bluestore.h is created by the "bluestore-tp" target, there
is a good chance that we build crimson when WITH_LTTNG is enabled,
let's ensure that tracing/bluestore.h is ready before compiling
alienstore.

Signed-off-by: Kefu Chai <kchai@redhat.com>