tests: fix run_tree and bddeb

This was broken probably when we inserted the ssh keys into Platform.
  tox -e citest tree_run
and
  tox -e citest bddeb

would fail with KeyError in Platform.init due to lack of a data_dir.

Also here are a few fixes found from attempting to make it work.

3 files changed, 18 insertions, 4 deletions

diff --git a/tests/cloud_tests/bddeb.py b/tests/cloud_tests/bddeb.py
index a6d5069f..b9cfcfa6 100644
--- a/tests/cloud_tests/bddeb.py
+++ b/tests/cloud_tests/bddeb.py
@@ -16,7 +16,7 @@ pre_reqs = ['devscripts', 'equivs', 'git', 'tar']
 
 def _out(cmd_res):
     """Get clean output from cmd result."""
-    return cmd_res[0].strip()
+    return cmd_res[0].decode("utf-8").strip()
 
 
 def build_deb(args, instance):
diff --git a/tests/cloud_tests/platforms/platforms.py b/tests/cloud_tests/platforms/platforms.py
index 1542b3be..abbfebba 100644
--- a/tests/cloud_tests/platforms/platforms.py
+++ b/tests/cloud_tests/platforms/platforms.py
@@ -2,12 +2,15 @@
 
 """Base platform class."""
 import os
+import shutil
 
 from simplestreams import filters, mirrors
 from simplestreams import util as s_util
 
 from cloudinit import util as c_util
 
+from tests.cloud_tests import util
+
 
 class Platform(object):
     """Base class for platforms."""
@@ -17,7 +20,14 @@ class Platform(object):
     def __init__(self, config):
         """Set up platform."""
         self.config = config
-        self._generate_ssh_keys(config['data_dir'])
+        self.tmpdir = util.mkdtemp()
+        if 'data_dir' in config:
+            self.data_dir = config['data_dir']
+        else:
+            self.data_dir = os.path.join(self.tmpdir, "data_dir")
+            os.mkdir(self.data_dir)
+
+        self._generate_ssh_keys(self.data_dir)
 
     def get_image(self, img_conf):
         """Get image using specified image configuration.
@@ -29,7 +39,7 @@ class Platform(object):
 
     def destroy(self):
         """Clean up platform data."""
-        pass
+        shutil.rmtree(self.tmpdir)
 
     def _generate_ssh_keys(self, data_dir):
         """Generate SSH keys to be used with image."""
diff --git a/tests/cloud_tests/util.py b/tests/cloud_tests/util.py
index 6ff285e7..3dd4996d 100644
--- a/tests/cloud_tests/util.py
+++ b/tests/cloud_tests/util.py
@@ -460,6 +460,10 @@ class PlatformError(IOError):
         IOError.__init__(self, message)
 
 
+def mkdtemp(prefix='cloud_test_data'):
+    return tempfile.mkdtemp(prefix=prefix)
+
+
 class TempDir(object):
     """Configurable temporary directory like tempfile.TemporaryDirectory."""
 
@@ -480,7 +484,7 @@ class TempDir(object):
         @return_value: tempdir path
         """
         if not self.tmpdir:
-            self.tmpdir = tempfile.mkdtemp(prefix=self.prefix)
+            self.tmpdir = mkdtemp(prefix=self.prefix)
         LOG.debug('using tmpdir: %s', self.tmpdir)
         return self.tmpdir