[trivial] Rename tox jobs for zuul

This patchset renames the tox.ini jobs:

* lint => pep8

to comply with OpenStack standards [0]. This is needed so that [1]
works seamlessly (it will enable py35 and cover jobs for Pegleg).

[0] e.g. 04469a5181/tox.ini (L119)
[1] I174d5df008f6e000da1a3878afe75919312ea7aa

Change-Id: Ic3a5f2391e129cae32f60c0fb17197169df1b4c6

Makefile

@@ -71,7 +71,7 @@ clean:
 
 .PHONY: py_lint
 py_lint:
-	cd src/bin/pegleg;tox -e lint
+	cd src/bin/pegleg;tox -e pep8
 
 .PHONY: py_format
 py_format:

src/bin/pegleg/tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py35, lint
+envlist = py35, pep8
 skipsdist = True
 
 [testenv]
@@ -19,7 +19,7 @@ deps = yapf==0.20.0
 commands =
     yapf --style=pep8 -ir {toxinidir}/pegleg {toxinidir}/tests
 
-[testenv:lint]
+[testenv:pep8]
 deps =
     yapf==0.20.0
     flake8==3.5.0

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py35, lint, docs
+envlist = py35, pep8, docs
 # Allows docs to be built without setup.py having to exist. Requires that
 # usedevelop be False as well (which it is by default).
 skipsdist = True
@@ -20,7 +20,7 @@ commands =
     tox -c src/bin/pegleg/tox.ini -e fmt
 whitelist_externals = tox
 
-[testenv:lint]
+[testenv:pep8]
 commands =
     tox -c src/bin/pegleg/tox.ini -e lint
 whitelist_externals = tox