Upgrade any existing nodepools after Lustre driver installation

[SikaGrr]

Description

This is not related to multi-NIC support, but was always needed, more details in go/multi-nic-lustre-support-in-xpk

Issue

b/476986325

Testing

Manually checked that nodepool upgrade happened only during execution of the second command:

xpk cluster create --device-type=n2-standard-64-1 --cluster=testlustre1 --zone=europe-west1-b --spot
xpk cluster create --device-type=n2-standard-64-1 --cluster=testlustre1 --zone=europe-west1-b --spot --enable-lustre-csi-driver
xpk cluster create --device-type=n2-standard-64-1 --cluster=testlustre2 --zone=europe-west1-b --spot --enable-lustre-csi-driver

[github-actions]

🤖 Hi @SikaGrr, I've received your request, and I'm working on it now! You can track my progress in the logs for more details.