CP-5443: Make sm compile with different Python versions.
CP-5443: Make sm compile with different Python versions.

Use proper include directory.

Signed-off-by: Frediano Ziglio <14cdc339e653bee16b9baab735d92664c449ffa1@citrix.com>

germanop/sm,kostaslamda/sm,germanop/sm,siddharthv/sm,pritha-srivastava/sm,chandrikas/sm,siddharthv/sm,martinjorge/sm,robertbreker/sm,germanop/sm,malcolmcrossley/sm,BobBall/sm,BobBall/sm,siddharthv/sm,chandrikas/sm,malcolmcrossley/sm,xapi-project/sm,djs55/sm,xapi-project/sm,martinjorge/sm,BobBall/sm,geosharath/sm,chandrikas/sm,martinjorge/sm,kostaslamda/sm,geosharath/sm,malcolmcrossley/sm,robertbreker/sm,kostaslamda/sm,djs55/sm,xapi-project/sm,pritha-srivastava/sm,robertbreker/sm,djs55/sm,pritha-srivastava/sm,geosharath/sm