Bug 1668097 - Update websocketprocessbridge dependencies for py3; r=bc

Under python 3, use a separate requirements file to install newer versions of twisted and ipaddr;
keep the original requirements under python 2 as the latest versions are problematic in our
Windows CI environment.

Differential Revision: https://phabricator.services.mozilla.com/D91942

testing/mochitest/mach_commands.py

@@ -372,7 +372,7 @@ class MachCommands(MachCommandBase):
 
         if ('mochitest', 'media') in suites:
             req = os.path.join('testing', 'tools', 'websocketprocessbridge',
-                               'websocketprocessbridge_requirements.txt')
+                               'websocketprocessbridge_requirements_3.txt')
             self.virtualenv_manager.activate()
             self.virtualenv_manager.install_pip_requirements(req, require_hashes=False)
 

testing/tools/websocketprocessbridge/websocketprocessbridge_requirements_3.txt

@@ -0,0 +1,15 @@
+# This file is the websocketprocess requirements.txt used with python 3.
+
+# needed by txws, and we'd like pip to get it from the local server before setuptools tries pypi
+six
+vcversioner==2.16.0.0
+twisted>=18.7.0
+
+# websocket adapter for twisted, might be built into twisted someday
+txws==0.9.1
+
+psutil>=5.6.3
+
+# Needed by iceserver
+ipaddr>=2.2.0
+passlib==1.6.5