blur mechanism intergrated

[Steamgjk]

Blurred Mechanism Integrated, Exemplar Configuration Parameters as Follows

experiments:

• num_servers: 1 fingerprint: abr: puffer_ttp abr_config: model_dir: /root/bbr-20190202-1 rebuffer_length_coeff: 100 blur_params: mean_val: 0.0 std_val: 1.0 kernel_size: 21 abr_name: puffer_ttp_20190202 cc: bbr

[Steamgjk]

STD 1.6 (Cross-Entropy-Loss ~1.5) and 5.0 (Cross-Entropy-Loss ~2.5) are the 2 cases that we want.

STD	Cross-Entropy-Loss
0.6	0.73012545
0.7	0.83488715
0.8	0.92994159
0.9	1.01693994
1	1.09734709
1.1	1.17217075
1.2	1.24215107
1.3	1.30786814
1.4	1.36979568
1.5	1.42833125
1.6	1.48381309
1.7	1.53653233
1.8	1.58674152
1.9	1.63466129
2	1.68048531
2.1	1.72438429
2.2	1.76650932
2.3	1.80699464
2.4	1.84595956
2.5	1.88350977
2.6	1.9197383
2.7	1.95472631
2.8	1.98854401
2.9	2.02125172
3	2.05290096
3.1	2.08353567
3.2	2.11319338
3.3	2.14190639
3.4	2.16970278
3.5	2.19660747
3.6	2.22264301
3.7	2.24783031
3.8	2.27218923
3.9	2.29573902
4	2.31849872
4.1	2.34048731
4.2	2.36172393
4.3	2.38222796
4.4	2.40201904
4.5	2.42111703
4.6	2.43954205
4.7	2.45731435
4.8	2.47445425
4.9	2.49098211
5	2.50478337

[francisyyan]

Code review comments need to be addressed in place by revising the existing commits. Each commit should implement only one feature / bug fix, so in this case, I coalesced all commits into one for you and created another pull request. I'll close this pull request and review the new one.