k8s_log no longer attempts to parse log as JSON

Fixes #68

Rather than relying on the default serialization logic (which attempts
    to parse a log as JSON and then load it into a wrapper class), we
now simply return the raw log data as expected. The previous behavior
worked in many cases because the log was serialized into a JSON string,
       but in the case of #68 the log was loaded as a JSON float, which
       made the error handling fail to fallback to returning the raw
       data.

plugins/modules/k8s_log.py

@@ -6,6 +6,8 @@
 
 from __future__ import absolute_import, division, print_function
 
+from ansible.module_utils.six import PY2
+
 __metaclass__ = type
 
 
@@ -182,11 +184,12 @@ class KubernetesLogModule(KubernetesAnsibleModule):
         if self.params.get('container'):
             kwargs['query_params'] = dict(container=self.params['container'])
 
-        log = resource.log.get(
+        log = serialize_log(resource.log.get(
             name=name,
             namespace=self.params.get('namespace'),
+            serialize=False,
             **kwargs
-        )
+        ))
 
         self.exit_json(changed=False, log=log, log_lines=log.split('\n'))
 
@@ -228,6 +231,12 @@ class KubernetesLogModule(KubernetesAnsibleModule):
         return selectors
 
 
+def serialize_log(response):
+    if PY2:
+        return response.data
+    return response.data.decode('utf8')
+
+
 def main():
     KubernetesLogModule().execute_module()