update subnet ordering code

[allmightyspiff]

https://softlayer-python.readthedocs.io/en/latest/_modules/SoftLayer/managers/network/#NetworkManager.add_subnet

Changes to how routing works means there isn't much difference between static and portable subnets anymore. Private and Public subnets can be both routed to an IP or routed to a vlan, so we need to allow for that.

TODO

• When ordering vlan, just use the PORTABLE_IP_ADDRESSES to find price ids

$> slcli order item-list PORTABLE_IP_ADDRESSES
┌───────────────────────────┬─────────────────────────────────────────┬──────────────────────────────────────────┬──────────┐
│         Category          │                 KeyName                 │               Description                │ Price Id │
├───────────────────────────┼─────────────────────────────────────────┼──────────────────────────────────────────┼──────────┤
│ sov_sec_ip_addresses_priv │    128_PORTABLE_PRIVATE_IP_ADDRESSES    │    128 Portable Private IP Addresses     │  37054   │
│ sov_sec_ip_addresses_priv │    16_PORTABLE_PRIVATE_IP_ADDRESSES     │     16 Portable Private IP Addresses     │  13982   │
│ sov_sec_ip_addresses_priv │          1_PORTABLE_PRIVATE_IP          │      1 Portable Private IP Address       │  229161  │
│ sov_sec_ip_addresses_priv │      2_PORTABLE_PRIVATE_IP_ADDRESS      │      2 Portable Private IP Address       │  291372  │
│ sov_sec_ip_addresses_priv │     8_PORTABLE_PRIVATE_IP_ADDRESSES     │     8 Portable Private IP Addresses      │  13935   │
│ sov_sec_ip_addresses_priv │    256_PORTABLE_PRIVATE_IP_ADDRESSES    │    256 Portable Private IP Addresses     │  21177   │
│ sov_sec_ip_addresses_priv │    32_PORTABLE_PRIVATE_IP_ADDRESSES     │     32 Portable Private IP Addresses     │  13997   │
│ sov_sec_ip_addresses_priv │    64_PORTABLE_PRIVATE_IP_ADDRESSES     │     64 Portable Private IP Addresses     │  14050   │
│ sov_sec_ip_addresses_priv │     4_PORTABLE_PRIVATE_IP_ADDRESSES     │     4 Portable Private IP Addresses      │  13981   │
│ sov_sec_ip_addresses_pub  │     4_PORTABLE_PUBLIC_IP_ADDRESSES      │      4 Portable Public IP Addresses      │  13980   │
│ sov_sec_ip_addresses_pub  │     2_PORTABLE_PUBLIC_IP_ADDRESSES      │      2 Portable Public IP Addresses      │  180757  │
│ sov_sec_ip_addresses_pub  │     64_PORTABLE_PUBLIC_IP_ADDRESSES     │     64 Portable Public IP Addresses      │  21767   │
│ sov_sec_ip_addresses_pub  │    128_PORTABLE_PUBLIC_IP_ADDRESSES     │     128 Portable Public IP Addresses     │  22341   │
│ sov_sec_ip_addresses_pub  │    256_PORTABLE_PUBLIC_IP_ADDRESSES     │     256 Portable Public IP Addresses     │  44758   │
│ sov_sec_ip_addresses_pub  │     16_PORTABLE_PUBLIC_IP_ADDRESSES     │     16 Portable Public IP Addresses      │  13978   │
│ sov_sec_ip_addresses_pub  │     32_PORTABLE_PUBLIC_IP_ADDRESSES     │     32 Portable Public IP Addresses      │  14049   │
│ sov_sec_ip_addresses_pub  │      1_PORTABLE_PUBLIC_IP_ADDRESS       │       1 Portable Public IP Address       │  180483  │
│ sov_sec_ip_addresses_pub  │     8_PORTABLE_PUBLIC_IP_ADDRESSES      │      8 Portable Public IP Addresses      │  13934   │
│   static_ipv6_addresses   │ 64_BLOCK_PORTABLE_PUBLIC_IPV6_ADDRESSES │ /64 Block Portable Public IPv6 Addresses │   1482   │
└───────────────────────────┴─────────────────────────────────────────┴──────────────────────────────────────────┴──────────┘

• allow user to specify if they are routing to a vlan, subnet, or datacenter (basically the "none" option in the portal)
  

• Make sure the slcli subnet add command is changed accordingly.

https://sldn.softlayer.com/reference/datatypes/SoftLayer_Container_Product_Order_Network_Subnet/#endPointVlanId
https://sldn.softlayer.com/reference/datatypes/SoftLayer_Container_Product_Order_Network_Subnet/#endPointIpAddressId