tests: decrease bandwidth burst in results

To test that torflow's scaling is using the minimum of all the
descriptor bandwidth values.

tests/unit/lib/data/results.txt

-{"version": 4, "time": 1523887747, "circ": ["AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"], "type": "success", "rtts": [0.4596822261810303, 0.44872617721557617, 0.4563450813293457, 0.44872212409973145, 0.4561030864715576, 0.4765200614929199, 0.4495084285736084, 0.45711588859558105, 0.45520496368408203, 0.4635589122772217], "fingerprint": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", "scanner": "IDidntEditTheSBWSConfig", "downloads": [{"amount": 590009, "duration": 6.1014368534088135}, {"amount": 590009, "duration": 8.391342878341675}, {"amount": 321663, "duration": 7.064587831497192}, {"amount": 321663, "duration": 8.266003131866455}, {"amount": 321663, "duration": 5.779450178146362}], "dest_url": "http://y.z", "nickname": "A", "address": "111.111.111.111", "master_key_ed25519": "g+Shk00y9Md0hg1S6ptnuc/wWKbADBgdjT0Kg+TSF3s", "relay_average_bandwidth": 1000000000, "relay_burst_bandwidth": 1000000000, "relay_observed_bandwidth": 524288}
+{"version": 4, "time": 1523887747, "circ": ["AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"], "type": "success", "rtts": [0.4596822261810303, 0.44872617721557617, 0.4563450813293457, 0.44872212409973145, 0.4561030864715576, 0.4765200614929199, 0.4495084285736084, 0.45711588859558105, 0.45520496368408203, 0.4635589122772217], "fingerprint": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", "scanner": "IDidntEditTheSBWSConfig", "downloads": [{"amount": 590009, "duration": 6.1014368534088135}, {"amount": 590009, "duration": 8.391342878341675}, {"amount": 321663, "duration": 7.064587831497192}, {"amount": 321663, "duration": 8.266003131866455}, {"amount": 321663, "duration": 5.779450178146362}], "dest_url": "http://y.z", "nickname": "A", "address": "111.111.111.111", "master_key_ed25519": "g+Shk00y9Md0hg1S6ptnuc/wWKbADBgdjT0Kg+TSF3s", "relay_average_bandwidth": 1000000000, "relay_burst_bandwidth": 123456, "relay_observed_bandwidth": 524288}
 {"version": 4, "time": 1523974147, "circ": ["AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"], "type": "error-stream", "msg": "Something bad happened while measuring bandwidth", "fingerprint": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA", "scanner": "IDidntEditTheSBWSConfig", "dest_url": "http://y.z", "nickname": "A", "address": "111.111.111.111", "master_key_ed25519": "g+Shk00y9Md0hg1S6ptnuc/wWKbADBgdjT0Kg+TSF3s"}

tests/unit/lib/test_v3bwfile.py

@@ -40,7 +40,7 @@ header_extra_str = LINE_SEP.join(header_extra_ls) + LINE_SEP
 
 # Line produced without any scaling.
 raw_bwl_str = "bw=56 bw_mean=61423 bw_median=55656 "\
-    "desc_bw_avg=1000000000 desc_bw_bur=1000000000 desc_bw_obs_last=524288 "\
+    "desc_bw_avg=1000000000 desc_bw_bur=123456 desc_bw_obs_last=524288 "\
     "desc_bw_obs_mean=524288 error_circ=0 error_misc=0 error_stream=1 " \
     "master_key_ed25519=g+Shk00y9Md0hg1S6ptnuc/wWKbADBgdjT0Kg+TSF3s " \
     "nick=A " \
@@ -267,13 +267,13 @@ def test_sbws_scale(datadir):
 def test_torflow_scale(datadir):
     results = load_result_file(str(datadir.join("results.txt")))
     v3bwfile = V3BWFile.from_results(results, scaling_method=TORFLOW_SCALING)
-    assert v3bwfile.bw_lines[0].bw == 520
+    assert v3bwfile.bw_lines[0].bw == 120
     v3bwfile = V3BWFile.from_results(results, scaling_method=TORFLOW_SCALING,
                                      torflow_cap=0.0001)
-    assert v3bwfile.bw_lines[0].bw == 520
+    assert v3bwfile.bw_lines[0].bw == 120
     v3bwfile = V3BWFile.from_results(results, scaling_method=TORFLOW_SCALING,
                                      torflow_cap=1, torflow_round_digs=1)
-    assert v3bwfile.bw_lines[0].bw == 500
+    assert v3bwfile.bw_lines[0].bw == 100
 
 
 def test_results_away_each_other(datadir):