VMM/handler: Fixed user{quota,services,transport} subcommands.
The subcommands user{quota,services,transport} actually failed with the
arguments '<address> domain'.
This is part II of changeset a75923ce2842
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Installation
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.. toctree::
:maxdepth: 1
installation/prerequisites
installation/system_preparation
installation/postgresql_configuration
installation/dovecot_configuration
installation/postfix_configuration
installation/install_vmm