Add documentation for Client Vpn Endpoint data

website/docs/d/ec2_client_vpn_endpoint.html.markdown

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+---
+subcategory: "EC2"
+layout: "aws"
+page_title: "AWS: aws_ec2_client_vpn_endpoint"
+description: |-
+  Get information on an EC2 Client Vpn Endpoint
+---
+
+# Data Source: aws_ec2_client_vpn_endpoint
+
+Get information on an EC2 Transit Gateway.
+
+## Example Usage
+
+### By Filter
+
+```hcl
+data "aws_ec2_client_vpn_endpoint" "example" {
+  filter {
+    name   = "tag:Name"
+    values = ["ExampleVpn"]
+  }
+}
+```
+
+### By Identifier
+
+```hcl
+data "aws_ec2_client_vpn_endpoint" "example" {
+  client_vpn_endpoint_id = "cvpn-endpoint-083cf50d6eb314f21"
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `filter` - (Optional) One or more configuration blocks containing name-values filters. Detailed below.
+* `id` - (Optional) The ID of the Client VPN endpoint.
+
+### filter Argument Reference
+
+* `name` - (Required) Name of the filter.
+* `values` - (Required) List of one or more values for the filter.
+
+## Attribute Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `arn` -  The ARN of the Client VPN endpoint.
+* `authentication_options` - Information about the authentication method to be used to authenticate clients.
+* `client_cidr_block` - The IPv4 address range, in CIDR notation, from which to assign client IP addresses.
+* `connection_log_options` - Information about the client connection logging options.
+* `description` - Description of de Client Vpn Endpoint.
+* `dns_name` - The DNS name to be used by clients when establishing their VPN session.
+* `dns_servers` - Information about the DNS servers to be used for DNS resolution.
+* `security_group_ids` - List VPC security groups associated with the endpoint.
+* `server_certificate_arn`- The ARN of the ACM server certificate.
+* `split_tunnel` - Indicates whether split-tunnel is enabled on VPN endpoint.
+* `tags` - A mapping of tags of the resource.
+* `transport_protocol` - The transport protocol to be used by the VPN session.
+* `vpc_id` - The VPC Id associated with the endpoint.
+* `vpn_port` - The vpn port.
+* `vpn_protocol` - The vpn protocol.