Remove use of paramiko in Fuchsia SSH module

Paramiko is a LGPL library, which complicates inclusion in Fuchsia
third_party. Replace this library with a call to the local ssh binary on
the host machine. This is a downgrade in terms of functionality, but is
necessary to run ACTS in the Fuchsia open source project.

Bug: 247016808
Test: act.py [...] -tc FlashTest \
  WlanRebootTest:test_soft_reboot_dut_5g_open_ipv4 \
  WlanSecurityComplianceABGTest:test_associate_11bg_sec_wpa_psk_ptk_tkip
Change-Id: I9ebb2a997aef305aa8d2b324f3368030c64996e6
7 files changed
tree: 1168c0bd270d9027f0e200683a1081439edd980f
  1. acts/
  2. acts_tests/
  3. tools/
  4. wts-acts/
  5. Android.mk
  6. LICENSE
  7. OWNERS
  8. PREUPLOAD.cfg