remove exit 0 for windows

Dockerfile

@@ -1,6 +1,6 @@
 FROM python:3-alpine
 USER root
 RUN adduser -D kfkuser
-RUN pip install strimzi-kafka-cli==0.1.0a52
+RUN pip install strimzi-kafka-cli==0.1.0a53
 USER kfkuser
 RUN kfk version

kfk/setup.py

@@ -29,7 +29,7 @@ def download_kubectl_if_not_exists():
 def update_kubectl_if_new_version_exists():
     if os.path.exists(KUBECTL_PATH) and os.environ.get('STRIMZI_KAFKA_CLI_KUBECTL_VERSION') is None and os.environ.get(
             'STRIMZI_KAFKA_CLI_KUBECTL_PATH') is None and KUBECTL_VERSION not in subprocess.check_output(
-            Kubectl().version("--client=true").build() + "; exit 0", shell=True, stderr=subprocess.STDOUT).decode(
+            Kubectl().version("--client=true").build(), shell=True, stderr=subprocess.STDOUT).decode(
             "utf-8"):
         os.rename(KUBECTL_PATH, KUBECTL_PATH + "_old")
         _download_kubectl()

setup.cfg

@@ -1,6 +1,6 @@
 [metadata]
 name = strimzi-kafka-cli
-version = 0.1.0-alpha52
+version = 0.1.0-alpha53
 description = Command Line Interface for Strimzi Kafka Operator
 url = https://github.com/systemcraftsman/strimzi-kafka-cli
 long_description = file: README.md