feat: update viper example

viper.example.yaml

@@ -1,16 +1,31 @@
+export_dir: "/home"
 ca:
     serial_number: 12152 # serial number
     subject:
         organization: "yourdomain.com"
         common_name: "*.yourdomain.com"
-        key_usage: 32
+    key_usage: 1
-        ext_key_usage: 12
+    ext_key_usage: 
+        - 1
+        - 2
         duration: 518400 #1 year
 client:
-    serial_number: 12152
+    serial_number: 12151232 # serial number
     subject:
         organization: "yourdomain.com"
-        common_name: "*.yourdomain.com"
+        country: "RM"
-        key_usage: 32
+        province: "REML"
-        ext_key_usage: 12
+        locality: ""
-        duration: 518400 #1 year
+        street_address: ""
+        postal_code: ""
+    subject_key_id:
+        - 1
+        - 2
+        - 3
+        - 4
+        - 6
+    key_usage: 1
+    ext_key_usage: 
+        - 1
+        - 2
+    duration: 518400