F5 image lookup fails for eu-fr2 region

[priyanknarvekar]

the upstream f5 tf now seems to use a python script for image lookup for diffrent regions,
instead of statically typed image ids as used in
https://github.com/terraform-ibm-modules/terraform-ibm-landing-zone/blob/main/f5_vsi.tf

https://github.com/f5devcentral/ibmcloud_schematics_bigip_multinic_declared/blob/master/bigip_image_selector.py

This results in f5 not being deployable with landing zone in eu-fr2

landing-zone should also be able to deploy f5 with correct image id for eu-fr2.