ucx: reduce components priority to 5.

ompi/mca/pml/ucx/pml_ucx_component.c

@@ -55,7 +55,7 @@ static int mca_pml_ucx_component_register(void)
                                            MCA_BASE_VAR_SCOPE_LOCAL,
                                            &ompi_pml_ucx.verbose);
 
-    ompi_pml_ucx.priority = 50;
+    ompi_pml_ucx.priority = 5;
     (void) mca_base_component_var_register(&mca_pml_ucx_component.pmlm_version, "priority",
                                            "Priority of the UCX component",
                                            MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,

oshmem/mca/spml/ucx/spml_ucx_component.c

@@ -93,7 +93,7 @@ static inline void  mca_spml_ucx_param_register_string(const char* param_name,
 
 static int mca_spml_ucx_component_register(void)
 {
-    mca_spml_ucx_param_register_int("priority", 20,
+    mca_spml_ucx_param_register_int("priority", 5,
                                       "[integer] ucx priority",
                                       &mca_spml_ucx.priority);