After upgrading from 0.10.0 to 0.12.1 the symlinks (config.yaml, hooks.yaml) in /etc/nvidia-mig/manager are incorrectly removed

[KeithMnemonic]

It seems after implementing this PR, #155, an upgrade from 0.10.0 is broken. Below is the output of

sudo rpm --upgrade -vv ./nvidia-mig-manager-0.12.1-1.x86_64.rpm

+ maybe_remove_hooks_symlink
++ readlink -f /etc/nvidia-mig-manager/hooks.yaml
+ local target=/etc/nvidia-mig-manager/hooks-default.yaml
+ '[' /etc/nvidia-mig-manager/hooks-default.yaml = /etc/nvidia-mig-manager/hooks-minimal.yaml ']'
+ '[' /etc/nvidia-mig-manager/hooks-default.yaml = /etc/nvidia-mig-manager/hooks-default.yaml ']'
+ rm -rf /etc/nvidia-mig-manager/hooks.yaml
+ maybe_remove_config_symlink
++ readlink -f /etc/nvidia-mig-manager/config.yaml
+ local target=/etc/nvidia-mig-manager/config-default.yaml
+ '[' /etc/nvidia-mig-manager/config-default.yaml = /etc/nvidia-mig-manager/config-default.yaml ']'
+ rm -rf /etc/nvidia-mig-manager/config.yaml