Swift busted with Heka

Swift and heka were broken by an optimization that resulted in
a regression in commit:
0a1486a2

This patch fixes that problem.

Change-Id: I02c6cf4de4f807c3ec66e2d4f59f182d0b864ea3
Closes-Bug: #1560788

ansible/roles/common/templates/heka-swift.toml.j2

 # Swift writes its logs to Syslog, so the generic Syslog input set in
 # heka-global.toml.j2 is used.
 
-[{{ item }}_file_output]
+[{{ item.name }}_file_output]
 type = "FileOutput"
-message_matcher = "Fields[programname] == '{{ item }}'"
-path = "/var/log/kolla/swift/{{ item }}.log"
+message_matcher = "Fields[programname] == '{{ item.name }}'"
+path = "/var/log/kolla/swift/{{ item.name }}.log"
 encoder = "syslog_encoder"
 folder_perm = "755"