if the AWS S3 bucket does not exist, create it

This makes the AWS S3 setup dead simple: just put in a awsbucket name of
your choosing, set the AWS credentials, and it'll do the rest, whether the
bucket exists already or not.  S3 buckets are trivial to delete too, in
case of error: `s3cmd rb s3://mybadbucketname`.

fdroidserver/server.py

@@ -38,7 +38,7 @@ def update_awsbucket(repo_section):
 
     import libcloud.security
     libcloud.security.VERIFY_SSL_CERT = True
-    from libcloud.storage.types import Provider
+    from libcloud.storage.types import Provider, ContainerDoesNotExistError
     from libcloud.storage.providers import get_driver
 
     if 'awsaccesskeyid' not in config or 'awssecretkey' not in config:
@@ -48,7 +48,11 @@ def update_awsbucket(repo_section):
 
     cls = get_driver(Provider.S3)
     driver = cls(config['awsaccesskeyid'], config['awssecretkey'])
-    container = driver.get_container(container_name=awsbucket)
+    try:
+        container = driver.get_container(container_name=awsbucket)
+    except ContainerDoesNotExistError:
+        container = driver.create_container(container_name=awsbucket)
+        logging.info('Created new container "' + container.name + '"')
 
     upload_dir = 'fdroid/' + repo_section
     if options.verbose:

setup.py

@@ -32,7 +32,7 @@ setup(name='fdroidserver',
         'paramiko',
         'PIL',
         'python-magic',
-        'apache-libcloud >= 0.5',
+        'apache-libcloud >= 0.14.1',
         ],
       classifiers=[
         'Development Status :: 3 - Alpha',