Ticket #47834 - Tombstone_to_glue: if parents are also converted to glue, the target entry's DN must be adjusted.

Description: commit 708a56b8d524131362e2d71b7fbc2eb257075e14 for
Ticket #47834 ingroduced the flood of "Connection is NULL and hence
cannot access SLAPI_CONN_ID" in the error log.  This patch changes
the log level of the message to LDAP_DEBUG_TRACE to suppress it.

ldap/servers/slapd/pblock.c

@@ -186,7 +186,7 @@ slapi_pblock_get( Slapi_PBlock *pblock, int arg, void *value )
 		break;
 	case SLAPI_CONN_ID:
 		if (pblock->pb_conn == NULL) {
-			LDAPDebug( LDAP_DEBUG_ANY,
+			LDAPDebug( LDAP_DEBUG_TRACE,
 		          "Connection is NULL and hence cannot access SLAPI_CONN_ID \n", 0, 0, 0 );
 			return (-1);
 		}