Fixed the following functional tests:
- tests/common/*
- tests/func/examples/*
- disabled some tests from tests/func/common/common_descriptor.json and moved them to disabled-common_descriptor.txt for revisiting later.
Fixed the following func tests:
- tests/func/examples/*
- tests/func/usecases
Fix fund tests :
- tests/func/serveronly
Fixed fund tests:
- tests/func/routing.

Disabled the following tests for now:
- testbasicroutingneg3
- testbasicrouting10-1
- testbasicrouting10-2
- testbasicrouting11neg1
- testbasicrouting11neg1
- testbasicrouting11pos
Fix func test quickstartguide.