Set correct expectations for Azure SRIOV specs

[s4heid]

This fix relates to: #443, which broke the ci.

Tests are passing now:

$ STEMCELL_IMAGE=/mnt/stemcells/azure/hyperv/ubuntu/work/work/azure-hyperv-ubuntu.raw STEMCELL_WORKDIR=/mnt/stemcells/azure/hyperv/ubuntu/work/work STEMCELL_INFRASTRUCTURE=azure OS_NAME=ubuntu OS_VERSION=jammy bundle exec rspec --tag ~exclude_on_azure spec/stemcells/azure_spec.rb 
Run options:
  include {:stemcell_image=>true, :os_image=>true}
  exclude {:shellout_types=>true, :exclude_on_azure=>true}
/dev/loop0
add map loop0p1 (252:0): 0 9997984 linear 7:0 63
..........................del devmap : loop0p1


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