remove pinned package versions

e2e/Dockerfile

@@ -8,10 +8,10 @@ COPY e2e/requirements.txt e2e/tests ./
 
 RUN apt-get update \
     && apt-get install --no-install-recommends -y \ 
-           python3=3.6.7-1~18.04 \
-           python3-setuptools=39.0.1-2 \
-           python3-pip=9.0.1-2.3~ubuntu1 \
-           curl=7.58.0-2ubuntu3.7 \
+           python3 \
+           python3-setuptools \
+           python3-pip \
+           curl \
     && pip3 install --no-cache-dir -r requirements.txt \
     && curl -LO https://storage.googleapis.com/kubernetes-release/release/v1.14.0/bin/linux/amd64/kubectl \
     && chmod +x ./kubectl \