sstmp charm: Configuration cannot be changed/updated neither on installing nor later on using GUI/CLI.

[Matthew Williams]

Affects: lp:~caio1982/charms/trusty/sstmp/trunk
Here is the last part of the log file:
2015-05-21 16:13:31 INFO unit.sstmp/0.install logger.go:40 Setting up git (1:1.9.1-1ubuntu0.1) ...
2015-05-21 16:13:31 INFO unit.sstmp/0.juju-log cmd.go:247 Saving config file...
2015-05-21 16:13:31 INFO unit.sstmp/0.juju-log cmd.go:247 Missing config template, aborting configuration
2015-05-21 16:13:31 INFO unit.sstmp/0.juju-log cmd.go:247 Saving reverse aliases file...
2015-05-21 16:13:31 INFO unit.sstmp/0.juju-log cmd.go:247 Missing revaliases template, aborting configuration

When using GUI to change/update configuration there is no response nor any entry in logs.

When updating settings from CLI it appears that value is stored on the state server but actual configuration files are not changed.
$ juju --show-log set sstmp <email address hidden>
2015-05-22 11:34:45 INFO juju.cmd supercommand.go:37 running juju [1.23.3-trusty-amd64 gc]
2015-05-22 11:34:45 INFO juju.api api.go:280 connecting to API addresses: [state-server:17070]
2015-05-22 11:34:45 INFO juju.api apiclient.go:261 dialing "wss://:17070/environment/38d0113e-be68-49a8-89a1-d484cbc7f09a/api"
2015-05-22 11:34:45 INFO juju.api apiclient.go:183 connection established to "wss://state-server:17070/environment/38d0113e-be68-49a8-89a1-d484cbc7f09a/api"
2015-05-22 11:34:45 WARNING juju.cmd.juju set.go:128 the configuration setting "revaliases_template" already has the value "IyBzU01UUCBhbGlhc2VzCiMgCiMgRm9ybWF0Oglsb2NhbF9hY2NvdW50Om91dGdvaW5nX2FkZHJl\nc3M6bWFpbGh1YgojCiMgRXhhbXBsZTogcm9vdDp5b3VyX2xvZ2luQHlvdXIuZG9tYWluOm1haWxo\ndWIueW91ci5kb21haW5bOnBvcnRdCiMgd2hlcmUgWzpwb3J0XSBpcyBhbiBvcHRpb25hbCBwb3J0\nIG51bWJlciB0aGF0IGRlZmF1bHRzIHRvIDI1Lgp1YnVudHU6cG9zdG1hc3RlckBzdGFnaW5nLnRp\nbWVzb2ZtYWx0YS5jb206c210cC5tYW5kcmlsbGFwcC5jb20KCg==\n"
2015-05-22 11:34:45 INFO juju.cmd supercommand.go:436 command finished

cat /etc/ssmtp/revaliases
# sSMTP aliases
#
# Format: local_account:outgoing_address:mailhub
#
# Example: root:<email address hidden>:mailhub.your.domain[:port]
# where [:port] is an optional port number that defaults to 25.

[Goran Miskovic (schkovich)]

It is I who bumped into the problem but couldn't submit bug report. Thanks Matthew!