[connman] service: plugged memory leak

The value returned by connman_storage_get_services() needs to be deallocated
with g_strfreev
Merge pull request #68 from lpotter/master

[connman] allow user input request signal when using autoconnect.
Merge pull request #75 from monich/connman_storage_get_services

service: plugged memory leak
[connman] do not start wifi scan if network is associating