Make example code using config.load_kube_config() more portable

Author: SEJeff

examples/example1.py

@@ -20,7 +20,7 @@
 def main():
     # Configs can be set in Configuration class directly or using helper
     # utility
-    config.load_kube_config(os.environ["HOME"] + '/.kube/config')
+    config.load_kube_config(os.path.join(os.path.expanduser('~'), '.kube', 'config')
 
     v1 = client.CoreV1Api()
     print("Listing pods with their IPs:")

examples/example2.py

@@ -20,7 +20,7 @@
 def main():
     # Configs can be set in Configuration class directly or using helper
     # utility
-    config.load_kube_config(os.environ["HOME"] + '/.kube/config')
+    config.load_kube_config(os.path.join(os.path.expanduser('~'), '.kube', 'config')
 
     v1 = client.CoreV1Api()
     count = 10

examples/example3.py

@@ -20,7 +20,7 @@
 def main():
     # Configs can be set in Configuration class directly or using helper
     # utility
-    config.load_kube_config(os.environ["HOME"] + '/.kube/config')
+    config.load_kube_config(os.path.join(os.path.expanduser('~'), '.kube', 'config')
 
     print("Supported APIs (* is preferred version):")
     print("%-20s %s" %