add option to specify md5 authentication key in interconnect peer

Author: rhariady

modules/interconnect_attachment/README.md

@@ -15,7 +15,7 @@
 | ipsec\_internal\_addresses | URL of addresses that have been reserved for the interconnect attachment, Used only for interconnect attachment that has the encryption option as IPSEC. | `list(string)` | `[]` | no |
 | mtu | Maximum Transmission Unit (MTU), in bytes, of packets passing through this interconnect attachment. Currently, only 1440 and 1500 are allowed. If not specified, the value will default to 1440. | `string` | `null` | no |
 | name | The name of the interconnect attachment | `string` | n/a | yes |
-| peer | BGP Peer for this attachment. | <pre>object({<br>    name                      = string<br>    peer_asn                  = string<br>    advertised_route_priority = optional(number)<br>    bfd = optional(object({<br>      session_initialization_mode = string<br>      min_transmit_interval       = optional(number)<br>      min_receive_interval        = optional(number)<br>      multiplier                  = optional(number)<br>    }))<br>  })</pre> | n/a | yes |
+| peer | BGP Peer for this attachment. | <pre>object({<br>    name                      = string<br>    peer_asn                  = string<br>    advertised_route_priority = optional(number)<br>    bfd = optional(object({<br>      session_initialization_mode = string<br>      min_transmit_interval       = optional(number)<br>      min_receive_interval        = optional(number)<br>      multiplier                  = optional(number)<br>    }))<br>    md5_authentication_key = object({<br>      name = string<br>      key  = string<br>    })<br>  })</pre> | n/a | yes |
 | project | The project ID to deploy to | `string` | n/a | yes |
 | region | Region where the attachment resides | `string` | n/a | yes |
 | router | Name of the router the attachment resides | `string` | n/a | yes |

modules/interconnect_attachment/main.tf

@@ -47,5 +47,6 @@ module "interface" {
     peer_asn                  = var.peer.peer_asn
     advertised_route_priority = lookup(var.peer, "advertised_route_priority", null)
     bfd                       = lookup(var.peer, "bfd", null)
+    md5_authentication_key    = lookup(var.peer, "md5_authentication_key", null)
   }]
 }

modules/interconnect_attachment/variables.tf

@@ -112,5 +112,9 @@ variable "peer" {
       min_receive_interval        = optional(number)
       multiplier                  = optional(number)
     }))
+    md5_authentication_key = object({
+      name = string
+      key  = string
+    })
   })
 }