Add slurm_xlator.h to slurm_mpi plugin

Otherwise the address of certain functions, like destroy_config_key_pair
is resolved from the PLT instead of the GOT. Then further xasserts over
the same object (with different address) can fail if we compare the address
of the PLT vs the GOT.

This fix resolves the symbol at compile time and not on runtime thus
forcing the usage of the address relative to the GOT.

Bug 14004

src/common/slurm_mpi.c

@@ -42,6 +42,7 @@
 #include <unistd.h>
 #include <sys/stat.h>
 
+#include "src/common/slurm_xlator.h"
 #include "src/common/env.h"
 #include "src/common/macros.h"
 #include "src/common/pack.h"