Support wildcard matching on MAC addresses

[niusmallnan]

From @mmriis :

It would be a nice feature to be able to wildcard match on mac adresses for interfaces. This is eg. useful for bonding where you would like all nics of a certain make or model to be added to the bond.

Using this feature you could do the following:

#cloud-config
rancher:
  network:
    interfaces:
      bond0:
        dhcp: true
        bond_opts:
          mode: 802.3ad
          lacp_rate: fast
          miimon: 100
        post_up:
          - ip route add 0.0.0.0/0 via 1.2.3.4
      # Add all Mellanox adapters to bond
      "mac=98:03:9b*":
        bond: bond0

[niusmallnan]

@kingsd041 Can you add automated tests for this feature? Please add to your to-do list. 😄

[kingsd041]

@mmriis has added a go test for this, so there is no need to add it to the automated test.

[rootwuj]

Tested with rancher/os:v1.5.2-rc1 from May 24 with VirtualBox

Test:

• Create VM and set up multiple NICs
• Execute ros install -d /dev/sda -c cloud-config.yml

$ vi cloud-config.yml
#cloud-config
rancher:
  network:
    interfaces:
      bond0:
        dhcp: true
        bond_opts:
          downdelay: "200"
          lacp_rate: "1"
          miimon: "100"
          mode: "2"
          updelay: "200"
          xmit_hash_policy: layer3+4
      mac=08:00:27*:
        bond: bond0
        dhcp: false

Result:

• All NICs are added to bond0.
• All NICs have the same mac address and are in the UP state.
• Can connect to VM via ssh.

Verified fixed.