Add the ability for Fuchsia device to up start sl4f

When a fuchsia device is instantiated, the fuchsia device
will attempt to start sl4f over ssh if an ssh_config is
specified.  It will also kill sl4f at teardown if the file
is specified.  Also update the sl4sanity test to reflect
the new features.

Bug: 129539854
Fixes: 129539854
Test: Ran sl4fsanity with an ssh_config specified and not
      specified. Ran the test with sl4f running and not
      running.  Verifying failures happened when expected
      and passed when expected.

Change-Id: Ief5e44d26a1653032b856e946db3fcf2ef972e29
2 files changed
tree: 24a4ea4af5ff674fb86b150bdb3f4e761f98211a
  1. acts/
  2. tools/
  3. wts-acts/
  4. Android.mk
  5. PREUPLOAD.cfg