ImportError: No module named requests

[bladedoyle]

Brief Description:

Starting the server fails with: ImportError: No module named requests

Operating System (OS and version): linux
OpenBazaar version: master
Hardware: intel

Reproducible (Always / Almost Always / Sometimes / Rarely / Couldn't Reproduce):

Always

Steps to reproduce:

1. install depends
2. clone the openbazaar server git repo
3. checkout master
4. manually apply fixes for existing issues TypeError with protobuf 3.0.0, protobuf 3.0.0b2 works #521 and AttributeError: 'module' object has no attribute 'SSL_ST_INIT' #531
5. run python openbazaard.py start

Observed Behavior:
Traceback (most recent call last):
File "openbazaard.py", line 12, in
from api.restapi import RestAPI
File "/ob/OpenBazaar-Server/api/restapi.py", line 32, in
from market.migration import migratev2
File "/ob/OpenBazaar-Server/market/migration.py", line 8, in
import requests
ImportError: No module named requests

Expected Behavior:

the server should start

Additional info (links, images, etc go here):

[bladedoyle]

Please add additional module depend "requests==2.18.1" to project requirements.txt

[bladedoyle]

This is a duplicate of #528