Don't wait until adding it to the subscriber data base, since the msisdn
may be needed beforehand (for instance in follow up patch to be passed
to osmo-msc configuration to route emergency calls).
Change-Id: I0d6902687e4beb3d6cdcefd4e343f21496100504
The getter method was named the same as the itnernal field, and hence
when used it would fail since the intenral field would be sleect and
fail to be called.
Change-Id: I2f631eb6256eb0e065f41d5b7531395c4a054cd8