[VOL-5000] VOL-5001 - edits for debugging voltha-prototype problems.
Makefile
--------
o Disable DISTUTILS_DEBUG, only needed when tracing pip install failure.
o Added comments and minor cleanups.
o Added enter/leave banners for targets.
o Display PROTO_FILES macro to see where the bash -c syntax error problem originated.
o ls /go/src and java_temp/ to show permissions (local docker issue).
o Sterile target updated to remove java_temp and addeed
mkdir helper logic to continue building locally.
tox.ini
-------
o Community reported people are no longer using python protos so
begin cleanup by removing old interpreters.
Change-Id: Ia7ae20bb409c9ccfdc2e87fb07491a143eae56da
diff --git a/tox.ini b/tox.ini
index df5e505..0b77d1f 100755
--- a/tox.ini
+++ b/tox.ini
@@ -13,7 +13,7 @@
; limitations under the License.
[tox]
-envlist = py27,py35,py36,py37,py38,3.9,3.10.6
+envlist = py36,py37,3.10.6
skip_missing_interpreters = true
[testenv]