Allow non existing configuration file

Fixes #1.

.gitignore

@@ -1,12 +1,18 @@
 .idea
 .vscode
 
-__pycache__
 
 ucloud/docs/build
 logs.txt
 
 ucloud.egg-info
 
+# run artefacts
 default.etcd
+__pycache__
+
+# build artefacts
 ucloud/version.py
+build/
+venv/
+dist/

setup.py

@@ -4,7 +4,7 @@ with open("README.md", "r") as fh:
     long_description = fh.read()
 
 setup(name='ucloud',
-      version='0.1',
+      version='0.0.1',
       description='All ucloud server components.',
       url='https://code.ungleich.ch/ucloud/ucloud',
       long_description=long_description,

ucloud/config.py

@@ -4,10 +4,15 @@ from ucloud.common.host import HostPool
 from ucloud.common.request import RequestPool
 from ucloud.common.vm import VmPool
 from ucloud.common.storage_handlers import FileSystemBasedImageStorageHandler, CEPHBasedImageStorageHandler
-from decouple import Config, RepositoryEnv
+from decouple import Config, RepositoryEnv, RepositoryEmpty
 
 
+# Try importing config, but don't fail if it does not exist
+try:
     env_vars = Config(RepositoryEnv('/etc/ucloud/ucloud.conf'))
+except FileNotFoundError:
+    env_vars = Config(RepositoryEmpty())
+
 
 etcd_wrapper_args = ()
 etcd_wrapper_kwargs = {