doc: change AES192C and AES256C to AES192-C and AES256-C

Also add a test to avoid a future regression.

Fix #1686

console/data/docs/02-configuration.md

@@ -389,7 +389,7 @@ The `snmp` provider accepts the following configuration keys:
   `user-name`, `authentication-protocol` (`none`, `MD5`, `SHA`, `SHA224`,
   `SHA256`, `SHA384`, and `SHA512` are accepted), `authentication-passphrase`
   (if the previous value was set), `privacy-protocol` (`none`, `DES`, `AES`,
-  `AES192`, `AES256`, `AES192C`, and `AES256C` are accepted, the later being
+  `AES192`, `AES256`, `AES192-C`, and `AES256-C` are accepted, the later being
   Cisco-variant), `privacy-passphrase` (if the previous value was set), and
   `context-name`.
 - `ports` is a map from exporter subnets to the SNMP port to use to poll

inlet/metadata/provider/snmp/config_test.go

@@ -196,6 +196,33 @@ func TestConfigurationUnmarshallerHook(t *testing.T) {
 					},
 				}),
 			},
+		}, {
+			Description: "SNMP security parameters with AES256C",
+			Initial:     func() interface{} { return Configuration{} },
+			Configuration: func() interface{} {
+				return gin.H{
+					"poller-timeout": "200ms",
+					"security-parameters": gin.H{
+						"user-name":                 "alfred",
+						"authentication-protocol":   "sha",
+						"authentication-passphrase": "hello",
+						"privacy-protocol":          "aes256-c",
+						"privacy-passphrase":        "bye",
+					},
+				}
+			},
+			Expected: Configuration{
+				PollerTimeout: 200 * time.Millisecond,
+				Credentials: helpers.MustNewSubnetMap(map[string]Credentials{
+					"::/0": {
+						UserName:                 "alfred",
+						AuthenticationProtocol:   AuthProtocolSHA,
+						AuthenticationPassphrase: "hello",
+						PrivacyProtocol:          PrivProtocolAES256C,
+						PrivacyPassphrase:        "bye",
+					},
+				}),
+			},
 		}, {
 			Description: "SNMP security parameters without privacy protocol",
 			Initial:     func() interface{} { return Configuration{} },