Fix(cv_deploy): Ensure lossrate for cv_pathfinder metadata is a float

[ClausHolbechArista]

Change Summary

Ensure lossrate for cv_pathfinder metadata is a float

Component(s) name

arista.avd.cv_workflow
arista.avd.cv_deploy

Proposed changes

• Recent changes made the metadata follow the schema 1:1, where the lossrate is a string.
• This now means we have to convert the lossrate to a float before sending it to CloudVision.

How to test

Amit will test manually.

Checklist

User Checklist

• N/A

Repository Checklist

• My code has been rebased from devel before I start
• I have read the CONTRIBUTING document.
• My change requires a change to the documentation and documentation have been updated accordingly.
• I have updated molecule CI testing accordingly. (check the box if not applicable)

[github-actions]

Review docs on Read the Docs

To test this pull request:

# Create virtual environment for this testing below the current directory
python -m venv test-avd-pr-4852
# Activate the virtual environment
source test-avd-pr-4852/bin/activate
# Install all requirements including PyAVD
pip install "pyavd[ansible] @ git+https://github.com/ClausHolbechArista/avd.git@fix/cv_deploy/ensure-limits-are-floats#subdirectory=python-avd" --force
# Point Ansible collections path to the Python virtual environment
export ANSIBLE_COLLECTIONS_PATH=$VIRTUAL_ENV/ansible_collections
# Install Ansible collection
ansible-galaxy collection install git+https://github.com/ClausHolbechArista/avd.git#/ansible_collections/arista/avd/,fix/cv_deploy/ensure-limits-are-floats --force
# Optional: Install AVD examples
cd test-avd-pr-4852
ansible-playbook arista.avd.install_examples

[gmuloc]

LGTM - waiting for @amit-arista to confirm it works on cvaas

[ClausHolbechArista]

Tested successfully by Amit.