Added a stroke command to export cached x509 certificates to the console

src/stroke/stroke_keywords.h

@@ -49,12 +49,14 @@ typedef enum {
 	STROKE_REREAD_ALL,
 	STROKE_PURGE_OCSP,
 	STROKE_PURGE_IKE,
-	STROKE_LEASES
+	STROKE_EXPORT_X509,
+	STROKE_LEASES,
 } stroke_keyword_t;
 
 #define STROKE_LIST_FIRST		STROKE_LIST_PUBKEYS
 #define STROKE_REREAD_FIRST		STROKE_REREAD_SECRETS
 #define STROKE_PURGE_FIRST		STROKE_PURGE_OCSP
+#define STROKE_EXPORT_FIRST		STROKE_EXPORT_X509
 
 typedef struct stroke_token stroke_token_t;