tests: move vpp-api tests to src/vpe-api/test

- Refactor make test code to be co-located with
  the vpp feature source code

Type: test

Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: Ic42bbd4e13606a5fdc91143ecc6452102ec337fe

diff --git a/test/test_endian.py b/src/vpp-api/test/test_endian.py
similarity index 100%
rename from test/test_endian.py
rename to src/vpp-api/test/test_endian.py

diff --git a/test/test_vapi.py b/src/vpp-api/test/test_vapi.py
similarity index 100%
rename from test/test_vapi.py
rename to src/vpp-api/test/test_vapi.py

diff --git a/test/test_vpe_api.py b/src/vpp-api/test/test_vpe_api.py
similarity index 100%
rename from test/test_vpe_api.py
rename to src/vpp-api/test/test_vpe_api.py