Enable CERT_CMD in iPXE

Enables certificate management commands in iPXE

Closes: https://github.com/netbootxyz/netboot.xyz/issues/1259

roles/netbootxyz/files/ipxe/local/general.h

@@ -1,3 +1,4 @@
+#define CERT_CMD              /* Certificate management commands */
 #define CONSOLE_CMD           /* Console command */
 #define DIGEST_CMD            /* Image crypto digest commands */
 #define DOWNLOAD_PROTO_HTTPS  /* Secure Hypertext Transfer Protocol */

roles/netbootxyz/files/ipxe/local/general.h.efi

@@ -1,3 +1,4 @@
+#define CERT_CMD              /* Certificate management commands */
 #define CONSOLE_CMD           /* Console command */
 #define DIGEST_CMD            /* Image crypto digest commands */
 #define DOWNLOAD_PROTO_HTTPS  /* Secure Hypertext Transfer Protocol */