Skip the inclusion of init file into the -cloud-tools-common package
when do_tools_common is false. That's necessary in order to support
linux-azure, that ships hyper-v tools but does not ship the common bits.

BugLink: http://bugs.launchpad.net/bugs/1764794Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Acked-by: Stefan Bader <stefan.bader@canonical.com>
Acked-by: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>