The nfv_client component had no unit tests, so coverage report
was not including it.
By adding this simple unit test, nfv_client is included
in the nfv coverage report.
This set of unit tests does some simple CLI shell validation
Story: 2004241
Task: 27765
Change-Id: Ic7054974e1c04abcbc2c6416ec33c6ee99928348
Signed-off-by: Al Bailey <Al.Bailey@windriver.com>