adding support for vJunos-switch

[akielaries]

This is a PR to add support for Juniper's vJunos-switch image that emulates an EX2914. vJunos Labs is a recent initiative that features lab images vJunos-switch and vJunosEvolved, the latter I am working out some kinks and will add this in a later PR. I used the below topology file with containerlab for testing. Once this is verified and upstream for vrnetlab I will make the PR for containerlab as well.

name: demo

topology:
  nodes:
    n1:
      kind: srl
      image: ghcr.io/nokia/srlinux
      startup-config: srl.cfg

    vswitch0:
      kind: vr-vjunosswitch
      image: vrnetlab/vr-vjunosswitch:23.2R1.14
      startup-config: vjunos.cfg

  links:
    - endpoints: ["n1:e1-1", "vswitch0:eth1"]

The existing Juniper nodes (vSRX, vMX, vQFX) feature some send/wait type logic on the Junos CLI to configure the nodes with their bare minimum configs enforced by vrnetlab (such as user, password, various set commands, etc). Instead of using this logic, I used the shipped make-config.sh shell script featured in the support.juniper.net site that creates a disk image based on a juniper.conf file (this is where the various bare minimum configs lie) and then mounts this disk to the main vJunos-switch VM image.

[hellt]

Hi @akielaries
thank you. I believe a matching PR should be opened against containerlab with the added kind.

Ah, I see that you have noted this...

[hellt]

thanks @akielaries