travis: pep8 changes to pycodestyle

Travis CI environment changes pep8 into pycodestyle, do the
transition on our side as well

Reviewed-By: Tibor Dudlak <tdudlak@redhat.com>

.travis.yml

@@ -9,7 +9,7 @@ cache: pip
 env:
     global:
         - TEST_RUNNER_IMAGE="freeipa/freeipa-test-runner:master-latest"
-          PEP8_ERROR_LOG="pep8_errors.log"
+          PEP8_ERROR_LOG="pycodestyle_errors.log"
           CI_RESULTS_LOG="ci_results_${TRAVIS_BRANCH}.log"
           CI_BACKLOG_SIZE=5000
           CI_RUNNER_LOGS_DIR="/tmp/test-runner-logs"
@@ -51,7 +51,7 @@ env:
 install:
     - pip install --upgrade pip
     - pip3 install --upgrade pip
-    - pip install pep8
+    - pip install pycodestyle
     - >
       pip3 install
       git+https://github.com/freeipa/ipa-docker-test-runner@release-0-2-1

.travis_run_task.sh

@@ -30,7 +30,7 @@ if [[ "$TASK_TO_RUN" == "lint" ]]
 then
     if [[ "$TRAVIS_EVENT_TYPE" == "pull_request" ]]
     then
-        git diff origin/$TRAVIS_BRANCH -U0 | pep8 --diff &> $PEP8_ERROR_LOG ||:
+        git diff origin/$TRAVIS_BRANCH -U0 | pycodestyle --diff &> $PEP8_ERROR_LOG ||:
     fi 
 
     # disable developer mode for lint task, otherwise we get an error