Typo fix: s/aditional/additional/
Typo fix: s/aditional/additional/

Trivial fix for a typo in message output of LUInstanceSetParams

Signed-off-by: Alexander Schreiber <d79673dae93c3dc95c222708a03b3bbd3a746b44@google.com>
Reviewed-by: René Nussbaumer <bc755ac45a0e799d1d490cba76febc56d80cc5fc@google.com>

dimara/ganeti,ganeti-github-testing/ganeti-test-1,mbakke/ganeti,yiannist/ganeti,apyrgio/snf-ganeti,andir/ganeti,ganeti/ganeti,onponomarev/ganeti,yiannist/ganeti,ganeti/ganeti,bitemyapp/ganeti,leshchevds/ganeti,apyrgio/ganeti,leshchevds/ganeti,ganeti-github-testing/ganeti-test-1,dimara/ganeti,mbakke/ganeti,apyrgio/snf-ganeti,ganeti/ganeti,apyrgio/ganeti,andir/ganeti,grnet/snf-ganeti,yiannist/ganeti,onponomarev/ganeti,andir/ganeti,mbakke/ganeti,bitemyapp/ganeti,grnet/snf-ganeti,leshchevds/ganeti