Integration Testing: tox env, pyxld 2.2.3, and revamp framework

Massive update to clean up and greatly enhance the integration testing
framework developed by Wesley Wiedenmeier.

 - Updated tox environment to run integration test 'citest' to utilize
   pylxd 2.2.3
 - Add support for distro feature flags
   - add framework for feature flags to release config with feature groups
     and overrides allowed in any release conf override level
   - add support for feature flags in platform and config handling
   - during collect, skip testcases that require features not supported by
     the image with a warning message
 - Enable additional distros (i.e. centos, debian)
 - Add 'bddeb' command to build a deb from the current working tree
   cleanly in a container, so deps do not have to be installed on host
 - Adds a command line option '--preserve-data' that ensures that
   collected data will be left after tests run. This also allows the
   directory to store collected data in during the run command to be
   specified using '--data-dir'.
 - Updated Read the Docs testing page and doc strings for pep 257
   compliance

1 files changed, 9 insertions, 35 deletions

diff --git a/tests/cloud_tests/platforms/base.py b/tests/cloud_tests/platforms/base.py
index 615e2e06..28975368 100644
--- a/tests/cloud_tests/platforms/base.py
+++ b/tests/cloud_tests/platforms/base.py
@@ -1,53 +1,27 @@
 # This file is part of cloud-init. See LICENSE file for license information.
 
+"""Base platform class."""
+
 
 class Platform(object):
-    """
-    Base class for platforms
-    """
+    """Base class for platforms."""
+
     platform_name = None
 
     def __init__(self, config):
-        """
-        Set up platform
-        """
+        """Set up platform."""
         self.config = config
 
     def get_image(self, img_conf):
-        """
-        Get image using 'img_conf', where img_conf is a dict containing all
-        image configuration parameters
-
-        in this dict there must be a 'platform_ident' key containing
-        configuration for identifying each image on a per platform basis
-
-        see implementations for get_image() for details about the contents
-        of the platform's config entry
+        """Get image using specified image configuration.
 
-        note: see 'releases' main_config.yaml for example entries
-
-        img_conf: configuration for image
-        return_value: cloud_tests.images instance
+        @param img_conf: configuration for image
+        @return_value: cloud_tests.images instance
         """
         raise NotImplementedError
 
     def destroy(self):
-        """
-        Clean up platform data
-        """
+        """Clean up platform data."""
         pass
 
-    def _extract_img_platform_config(self, img_conf):
-        """
-        extract platform configuration for current platform from img_conf
-        """
-        platform_ident = img_conf.get('platform_ident')
-        if not platform_ident:
-            raise ValueError('invalid img_conf, missing \'platform_ident\'')
-        ident = platform_ident.get(self.platform_name)
-        if not ident:
-            raise ValueError('img_conf: {} missing config for platform {}'
-                             .format(img_conf, self.platform_name))
-        return ident
-
 # vi: ts=4 expandtab