tcf-agent: Use common two-digit sequence numbers for init script links

The common init script links use two-digit sequence numbers and
systemd interprets everything behind the two-digits as service name.
This leads to the following failure during boot:
  Cannot add dependency job for unit 9tcf-agent.service

Signed-off-by: Stefan Herbrechtsmeier <stefan@herbrechtsmeier.net>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
qemuimage-testlib: add support for extra arguments passed to runqemu

Some tests might want to pass extra arguments to runqemu.
I can think of "kvm" or qemuparams="-m 1024" when we want extra muscle.

Signed-off-by: Stefan Stanacar <stefanx.stanacar@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
qemuimage-testlib: pass optional timeout to ssh function

Sometimes we need to change the timeout used by the function for
certain kinds of tests.

Signed-off-by: Stefan Stanacar <stefanx.stanacar@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
qemuimage-testlib: change default directory for target tests

/tmp is a better location, and it allows copying files
on read only fs images

Signed-off-by: Stefan Stanacar <stefanx.stanacar@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>