Enable verbose of tests during PGO build on amd64 platforms

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-01-15.05:26:47.703>
labels = ['3.8', 'type-feature', '3.7', 'OS-windows', 'build']
title = 'Enable verbose of tests during PGO build on amd64 platforms'
updated_at = <Date 2019-01-19.07:03:19.158>
user = 'https://github.com/neyuru'

bugs.python.org fields:

activity = <Date 2019-01-19.07:03:19.158>
actor = 'neyuru'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Build', 'Windows']
creation = <Date 2019-01-15.05:26:47.703>
creator = 'neyuru'
dependencies = []
files = []
hgrepos = []
issue_num = 35739
keywords = ['patch', 'patch', 'patch']
message_count = 3.0
messages = ['333648', '333722', '334042']
nosy_count = 5.0
nosy_names = ['paul.moore', 'tim.golden', 'zach.ware', 'steve.dower', 'neyuru']
pr_nums = ['11558', '11558', '11558']
priority = 'normal'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'enhancement'
url = 'https://bugs.python.org/issue35739'
versions = ['Python 3.7', 'Python 3.8']