Deal with output which is JSON per line

Deal with output which is JSON per line and for now, deal with
possible non json lines.

lib/ansible/runner.rb

@@ -12,7 +12,21 @@ def run_via_cli(env_vars, extra_vars, playbook_path)
           mkdir(base_dir + '/project') # without this, there is a silent fail of the ansible-runner command see https://github.com/ansible/ansible-runner/issues/88
 
           result = AwesomeSpawn.run!(ansible_command(base_dir), :env => env_vars, :params => [{:cmdline => "--extra-vars '#{JSON.dump(extra_vars)}'", :playbook => playbook_path}])
-          JSON.parse(result.output)
+
+          parsed_stdout = []
+
+          # output is JSON per new line
+          result.output.each_line do |line|
+            # TODO(lsmola) we can remove exception handling when this is fixed
+            # https://github.com/ansible/ansible-runner/issues/89#issuecomment-404236832 , so it fails early if there is
+            # a non json line
+            begin
+              parsed_stdout << JSON.parse(line)
+            rescue => e
+              _log.warn("Couldn't parse JSON from: #{e}")
+            end
+          end
+          parsed_stdout
         end
       end