Update v3 security group docu with "icmpv6" protocol

Author: jochenehret

docs/v3/source/includes/api_resources/_security_groups.erb

@@ -21,6 +21,13 @@
       "code": 0,
       "description": "Allow ping requests to private services"
     },
+    {
+      "protocol": "icmpv6",
+      "destination": "::/0",
+      "type": -1,
+      "code": -1,
+      "description": "Allow all ICMPv6 traffic"
+    },
     {
       "protocol": "tcp",
       "destination": "1.1.1.1,2.2.2.2/24,10.0.0.0-10.0.0.255",

docs/v3/source/includes/resources/security_groups/_object.md.erb

@@ -25,8 +25,8 @@ Name | Type | Description
 
 | Name | Type | Description | Required | Default
 | ---- | ---- | ----------- | -------- | -------
-| **protocol** | _string_ | Protocol type Valid values are `tcp`, `udp`, `icmp`, or `all` | yes | N/A |
-| **destination** | _string_ | The destination where the rule applies. Must be a singular Valid CIDR, IP address, or IP address range unless `cc.security_groups.enable_comma_delimited_destinations` is enabled. Then, the destination can be a comma-delimited string of CIDRs, IP addresses, or IP address ranges. Octets within destinations cannot contain leading zeros; eg. `10.0.0.0/24` is valid, but `010.00.000.0/24` is *not*.  | yes | N/A |
+| **protocol** | _string_ | Protocol type Valid values are `tcp`, `udp`, `icmp`, `icmpv6` or `all` | yes | N/A |
+| **destination** | _string_ | The destination where the rule applies. Must be a singular valid CIDR, IP address, or IP address range unless `cc.security_groups.enable_comma_delimited_destinations` is enabled. Then, the destination can be a comma-delimited string of CIDRs, IP addresses, or IP address ranges. Octets within destinations cannot contain leading zeros; eg. `10.0.0.0/24` is valid, but `010.00.000.0/24` is *not*. For `icmp`, only IPv4 addresses are allowed and for `icmpv6` only IPv6 addresses. | yes | N/A |
 | **ports** | _string_ | Ports that the rule applies to; can be a single port (`9000`), a comma-separated list (`9000,9001`), or a range (`9000-9200`) | no | `null` |
 | **type** | _integer_ |[Type](https://www.iana.org/assignments/icmp-parameters/icmp-parameters.xhtml#icmp-parameters-types) required for ICMP protocol; valid values are between -1 and 255 (inclusive), where -1 allows all | no | `null` |
 | **code** | _integer_ |[Code](https://www.iana.org/assignments/icmp-parameters/icmp-parameters.xhtml#icmp-parameters-codes) required for ICMP protocol; valid values are between -1 and 255 (inclusive), where -1 allows all | no | `null` |