Changes

ts_51_011: Improve testing of EF_SMSP

* add another set of test data (from a real-world SIM card)
* switch from test_decode to test_de_encode as our encoder now works due
  to previous commits.

Change-Id: I8d16e195641bb59b2c26072008f88434692c0cab

pySim/ts_51_011: Properly re-compute ScAddr length

EF.SMSP contains up to two addresses: Both are stored in a fixed-length
field of 12 octets.  However, the actually used size depends on the
number of digits in the respective number.  Let's compute that length
field properly

Change-Id: Idef54a3545d1a5367a1efa2f0a6f7f0c1f860105

pySim.ts_51_011.EF_SMSP: Properly handle odd-length ScAddr / TpAddr

As the input phone number ("address") might be of an odd length of
digits, let's use PaddedBcdAdapter to fix two problems:

1) strip any potential trailing f in decoding
2) fix truncation of last digit during encoding

Change-Id: I1e9865e172bc29b8a31c281106d903934e81c686
Depends: pyosmocom Ib5afb5ab5c2bc9b519dc92818fc6974f7eecba16 (0.0.12