Update dependency stackhpc.libvirt-host to v1.9.0

This MR contains the following updates:

Package	Type	Update	Change
stackhpc.libvirt-host	role	minor	v1.8.3 -> v1.9.0

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Release Notes

stackhpc/ansible-role-libvirt-host

v1.9.0

Compare Source

• CentOS 8 EFI support
• IPv6 networks & routes

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