Adde gateway URL to terraform provisioned list

[ ] Provisioning information https://github.com/tomeshnet/ipfs-live-streaming/pull/76#discussion_r314964285

We need to print the URL of this gateway in terraform provision complete

Current:

Apply complete! Resources: 22 added, 0 changed, 0 destroyed.

Outputs:

digital_ocean_droplets = [
    rtmp-server:             active,
    ipfs-mirror instance(s): 1,
    active
]
dns_records = [
                      stream.e-mesh.net = 68.183.194.72,
          rtmp-server.stream.e-mesh.net = 68.183.194.72,
    {
        ipfs-mirror-0.stream.e-mesh.net = 165.22.232.129
    },
    {
        ipfs-gateway-0.stream.e-mesh.net = 165.22.232.129
    },
          private.rtmp-server.stream.e-mesh.net = 10.137.95.182,
          private.rtmp-server.stream.e-mesh.net = 10.137.95.182,
    {
        private.ipfs-mirror-0.stream.e-mesh.net = 10.137.159.131
    },
    {
        private.ipfs-gateway-0.stream.e-mesh.net = 10.137.159.131
    },
          v6.rtmp-server.stream.e-mesh.net = 2604:a880:cad:d0::685d:1,
    {
        v6.ipfs-mirror-0.stream.e-mesh.net = 2604:a880:cad:d0::6873:b001
    },
    {
        v6.ipfs-gateway-0.stream.e-mesh.net = 2604:a880:cad:d0::6873:b001
    },
         openvpn.publish.stream.e-mesh.net = 10.10.10.1,
       yggdrasil.publish.stream.e-mesh.net = 200:6e59:7ba8:453d:11aa:a152:bc37:d9eb
]
private_urls = [
    RTMP publish (.keys/client.conf):    rtmp://10.10.10.1:1935/live,
    RTMP publish (.keys/yggdrasil.conf): rtmp://[200:6e59:7ba8:453d:11aa:a152:bc37:d9eb]:1935/live
]
public_urls = [
    RTMP stream:                rtmp://rtmp-server.stream.e-mesh.net/live,
    HLS stream (origin):        https://stream.e-mesh.net/live.m3u8,
    HLS stream (mirror-N):      https://ipfs-mirror-N.stream.e-mesh.net/live.m3u8,
    IPNS HLS stream (origin):   https://ipfs-gateway.stream.e-mesh.net/ipns/QmV71DGDgzEchEUYYJfCSKftKHzzdr5t6q6SqseLupu8Qo,
    IPNS HLS stream (mirror-N): https://ipfs-gateway-N.stream.e-mesh.net/ipns/QmV71DGDgzEchEUYYJfCSKftKHzzdr5t6q6SqseLupu8Qo,
    Video player (origin):      https://stream.e-mesh.net,
    Video player (mirror-N):    https://ipfs-mirror-N.stream.e-mesh.net,
    Video player (debug):       https://stream.e-mesh.net?live=live.m3u8
]
ssh_access = [
    rtmp-server:   ssh -i .keys/id_rsa root@rtmp-server.stream.e-mesh.net,
    ipfs-mirror-N: ssh -i .keys/id_rsa root@ipfs-mirror-N.stream.e-mesh.net
]

[ ] null_resources

+ null_resource.ipfs-mirror
  id:                   <computed>

+ null_resource.rtmp-server
  id:                   <computed>

[ ] Missing from list of povisioned items https://github.com/tomeshnet/ipfs-live-streaming/pull/76#discussion_r314964215

possibly " ${digitalocean_record.ipfs-server-gateway.fqdn} = ${digitalocean_record.rtmp-server.value}",

[ ] Null resource when installing (should be ipfs mirror i think)

null_resource.rtmp-server: Provisioning with 'remote-exec'...
null_resource.rtmp-server (remote-exec): Connecting to remote host via SSH...
null_resource.rtmp-server (remote-exec):   Host: 68.183.194.72
null_resource.rtmp-server (remote-exec):   User: root
null_resource.rtmp-server (remote-exec):   Password: false
null_resource.rtmp-server (remote-exec):   Private key: true
null_resource.rtmp-server (remote-exec):   SSH Agent: true
null_resource.rtmp-server (remote-exec):   Checking Host Key: false
digitalocean_record.ipfs-server-v6: Creation complete after 1s (ID: 77647234)
null_resource.rtmp-server (remote-exec): Connected!
digitalocean_record.ipfs-server-gateway-private: Creation complete after 0s (ID: 77647235)
null_resource.rtmp-server (remote-exec): Generating DH parameters, 2048 bit long safe prime, generator 2
null_resource.rtmp-server (remote-exec): This is going to take a long time
digitalocean_droplet.ipfs-mirror: Still creating... (10s elapsed)
null_resource.rtmp-server: Still creating... (10s elapsed)
digitalocean_droplet.ipfs-mirror: Still creating... (20s elapsed)
null_resource.rtmp-server: Still creating... (20s elapsed)
digitalocean_droplet.ipfs-mirror: Still creating... (30s elapsed)
null_resource.rtmp-server: Still creating... (30s elapsed)
null_resource.rtmp-server (remote-exec):

tomeshnet / ipfs-live-streaming

Adde gateway URL to terraform provisioned list #91