Use newer python version for releasing to pypi (#395)

* Pin kube dependency properly

* Use python3 instead of 2 for pushing to pypi

.travis.yml

@@ -39,6 +39,7 @@ jobs:
     - TEST_SUITE=lint OPENSHIFT_VERSION=latest
   - stage: deploy
     script: skip
+    python: '3.5'
     deploy:
       provider: pypi
       user: openshift
@@ -49,6 +50,7 @@ jobs:
         repo: openshift/openshift-restclient-python
         condition: "$TRAVIS_TAG =~ ^v[0-9]+\\.[0-9]+\\.[0-9]+(([ab]|dev|rc)[0-9]+)?$"
   - stage: test-deploy
+    python: '3.5'
     script: python -c "import openshift ; print(openshift.__version__)"
     install:
       - pip install openshift

requirements.txt

@@ -1,5 +1,5 @@
 jinja2
-kubernetes
+kubernetes ~= 12.0
 python-string-utils
 ruamel.yaml
 six

scripts/update-version.sh

@@ -9,6 +9,6 @@ echo "--- updating version information..."
 sed -i'' "s/^CLIENT_VERSION = .*/CLIENT_VERSION = \\\"${CLIENT_VERSION}\\\"/" "${SCRIPT_ROOT}/../setup.py"
 sed -i'' "s/^__version__ = .*/__version__ = \\\"${CLIENT_VERSION}\\\"/" "${CLIENT_ROOT}/__init__.py"
 sed -i'' "s/^Version:.*/Version:    ${CLIENT_VERSION}/" "${SCRIPT_ROOT}/../python-openshift.spec"
-sed -i'' "s/^kubernetes ~= .*/kubernetes ~= ${KUBERNETES_CLIENT_VERSION}/" "${SCRIPT_ROOT}/../requirements.txt"
+sed -i'' "s/^kubernetes.*/kubernetes ~= ${KUBERNETES_CLIENT_VERSION}/" "${SCRIPT_ROOT}/../requirements.txt"
 sed -i'' "s/^__k8s_client_version__ = .*/__k8s_client_version__ = \\\"${KUBERNETES_CLIENT_VERSION}\\\"/" "${CLIENT_ROOT}/__init__.py"
 sed -i'' "s/^kubernetes .=.*/kubernetes ~= ${KUBERNETES_CLIENT_VERSION}/" ${SOURCE_ROOT}/requirements.txt