htools: fix long version of --port for daemons
htools: fix long version of --port for daemons

The dashes do not need to be in, if they are then the resulting option
is:

  -p PORT  ----port=PORT     Network port (default: 1814)

Signed-off-by: Iustin Pop <acf83a5274f31a43af6b914614365999469c1a31@google.com>
Reviewed-by: René Nussbaumer <bc755ac45a0e799d1d490cba76febc56d80cc5fc@google.com>

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