Update StrippingBu2LLK.py

Propagate the 2018 setup to 2017 without changes. Needs the RelInfo tools from !1263 (merged) and this Phys!597 (merged) MR from Phys.

Rate test:

StrippingReport                                                INFO Event 163109, Good event 163109
 |                                              *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
 |_StrippingGlobal_                                            |  1.0833|      1767|       |  23.807|
 |_StrippingSequenceStreamLeptonic_                            |  1.0833|      1767|       |  23.801|
 |!StrippingBu2LLK_eeLine                                      |  0.1061|       173|  2.601|   9.719|
 |!StrippingBu2LLK_eeLine_extra                                |  0.0564|        92|  2.598|   0.137|
 |!StrippingBu2LLK_eeLine2                                     |  0.1453|       237|  2.532|   1.004|
 |!StrippingBu2LLK_eeLine2_extra                               |  0.0791|       129|  2.783|   0.135|
 |!StrippingBu2LLK_eeSSLine2                                   |  0.0803|       131|  3.130|   0.593|
 |!StrippingBu2LLK_mmLine                                      |  0.2244|       366|  2.784|   0.814|
 |!StrippingBu2LLK_mmLine_extra                                |  0.1048|       171|  2.474|   0.186|
 |!StrippingBu2LLK_mmSSLine                                    |  0.0638|       104|  2.798|   0.283|
 |!StrippingBu2LLK_meLine                                      |  0.1827|       298|  2.581|   0.520|
 |!StrippingBu2LLK_meSSLine                                    |  0.1153|       188|  2.441|   0.296|
 |!StrippingBu2LLK_mtLine                                      |  0.0589|        96|  3.219|   0.334|
 |!StrippingBu2LLK_mtSSLine                                    |  0.0411|        67|  3.388|   0.070|
 |!StrippingBu2LLK_eeLine3                                     |  0.1269|       207|  2.295|   5.619|
 |!StrippingBu2LLK_eeLine4                                     |  0.1392|       227|  3.396|   0.971|
 |!StrippingBu2LLK_eeLine_TIMING                               |  0.1061|       173|  2.601|   0.134|
 |!StrippingBu2LLK_eeLine_extra_TIMING                         |  0.0564|        92|  2.598|   0.071|
 |!StrippingBu2LLK_eeLine2_TIMING                              |  0.1453|       237|  2.532|   0.166|
 |!StrippingBu2LLK_eeLine2_extra_TIMING                        |  0.0791|       129|  2.783|   0.072|
 |!StrippingBu2LLK_eeSSLine2_TIMING                            |  0.0797|       130|  3.154|   0.105|
 |!StrippingBu2LLK_mmLine_TIMING                               |  0.2238|       365|  2.792|   0.238|
 |!StrippingBu2LLK_mmLine_extra_TIMING                         |  0.1048|       171|  2.474|   0.077|
 |!StrippingBu2LLK_mmSSLine_TIMING                             |  0.0638|       104|  2.798|   0.083|
 |!StrippingBu2LLK_meLine_TIMING                               |  0.1827|       298|  2.581|   0.221|
 |!StrippingBu2LLK_meSSLine_TIMING                             |  0.1153|       188|  2.441|   0.106|
 |!StrippingBu2LLK_mtLine_TIMING                               |  0.0546|        89|  3.472|   0.085|
 |!StrippingBu2LLK_mtSSLine_TIMING                             |  0.0380|        62|  3.661|   0.052|
 |!StrippingBu2LLK_eeLine3_TIMING                              |  0.1226|       200|  2.375|   0.158|
 |!StrippingBu2LLK_eeLine4_TIMING                              |  0.1392|       227|  3.396|   0.255|