Fix python3.7 import errors and made job voting

Python3.7 finally removed relative imports so we adopt the correct
syntax and also making py37 job voting to avoid regressions.

Change-Id: I16e01344e8ae1c732c31264c50d6dd57143ea799

.zuul.yaml

@@ -2,7 +2,7 @@
 - project:
     templates:
       - docs-on-readthedocs
-      - openstack-python37-jobs-nonvoting
+      - openstack-python37-jobs
       - openstack-python36-jobs
     vars:
       rtd_webhook_id: '51626'

browbeat/perfkit.py

@@ -19,13 +19,13 @@ import shutil
 import subprocess
 import time
 
-import elastic
+import browbeat.tools
-import grafana
+from browbeat import elastic
-from path import get_overcloudrc
+from browbeat import grafana
-from path import get_workload_venv
+from browbeat import workloadbase
-from path import results_path
+from browbeat.path import get_overcloudrc
-import tools
+from browbeat.path import get_workload_venv
-import workloadbase
+from browbeat.path import results_path
 
 class PerfKit(workloadbase.WorkloadBase):
 
@@ -34,7 +34,7 @@ class PerfKit(workloadbase.WorkloadBase):
         self.overcloudrc = get_overcloudrc()
         self.config = config
         self.result_dir_ts = result_dir_ts
-        self.tools = tools.Tools(self.config)
+        self.tools = browbeat.tools.Tools(self.config)
         self.grafana = grafana.Grafana(self.config)
         self.elastic = elastic.Elastic(self.config, self.__class__.__name__.lower())
 

browbeat/rally.py

@@ -20,13 +20,12 @@ import re
 import shutil
 import time
 
-import elastic
+import browbeat.tools
-import grafana
+from browbeat import elastic
-from path import get_workload_venv
+from browbeat import grafana
-from path import results_path
+from browbeat import workloadbase
-import workloadbase
+from browbeat.path import get_workload_venv
-import tools
+from browbeat.path import results_path
-
 
 class Rally(workloadbase.WorkloadBase):
 
@@ -34,7 +33,7 @@ class Rally(workloadbase.WorkloadBase):
         self.logger = logging.getLogger('browbeat.rally')
         self.config = config
         self.result_dir_ts = result_dir_ts
-        self.tools = tools.Tools(self.config)
+        self.tools = browbeat.tools.Tools(self.config)
         self.grafana = grafana.Grafana(self.config)
         self.elastic = elastic.Elastic(self.config, self.__class__.__name__.lower())
 

browbeat/shaker.py

@@ -19,13 +19,13 @@ import time
 import uuid
 import yaml
 
-import elastic
+import browbeat.tools
-import grafana
+from browbeat import elastic
-from path import get_overcloudrc
+from browbeat import grafana
-from path import get_workload_venv
+from browbeat import workloadbase
-from path import results_path
+from browbeat.path import get_overcloudrc
-import workloadbase
+from browbeat.path import get_workload_venv
-import tools
+from browbeat.path import results_path
 
 
 class Shaker(workloadbase.WorkloadBase):
@@ -35,7 +35,7 @@ class Shaker(workloadbase.WorkloadBase):
         self.overcloudrc = get_overcloudrc()
         self.config = config
         self.result_dir_ts = result_dir_ts
-        self.tools = tools.Tools(self.config)
+        self.tools = browbeat.tools.Tools(self.config)
         self.grafana = grafana.Grafana(self.config)
         self.elastic = elastic.Elastic(self.config, self.__class__.__name__.lower())
 

browbeat/tools.py

@@ -16,10 +16,10 @@ import os
 import re
 import subprocess
 
-import perfkit
+from browbeat import perfkit
-import rally
+from browbeat import rally
-import shaker
+from browbeat import shaker
-import yoda
+from browbeat import yoda
 
 
 class Tools(object):
@@ -51,7 +51,7 @@ class Tools(object):
                                    stderr=subprocess.PIPE)
         stdout, stderr = process.communicate()
         output_dict = {}
-        output_dict['stdout'] = stdout.strip()
+        output_dict['stdout'] = stdout.strip().decode()
         output_dict['stderr'] = stderr.strip()
         output_dict['rc'] = process.returncode
         if process.returncode > 0:

browbeat/yoda.py

@@ -28,11 +28,11 @@ except ImportError:
     ostag = None
 import requests
 
-import elastic
+import browbeat.tools
-import grafana
+from browbeat import elastic
-from path import results_path
+from browbeat import grafana
-import workloadbase
+from browbeat import workloadbase
-import tools
+from browbeat.path import results_path
 
 
 class Yoda(workloadbase.WorkloadBase):
@@ -41,7 +41,7 @@ class Yoda(workloadbase.WorkloadBase):
         self.logger = logging.getLogger('browbeat.yoda')
         self.config = config
         self.result_dir_ts = result_dir_ts
-        self.tools = tools.Tools(self.config)
+        self.tools = browbeat.tools.Tools(self.config)
         self.grafana = grafana.Grafana(self.config)
         self.elastic = elastic.Elastic(self.config, self.__class__.__name__.lower())
         self.error_count = 0

tox.ini

@@ -1,6 +1,6 @@
 [tox]
 minversion = 2.0
-envlist = py27,py35,py36,linters,dist,insights
+envlist = py27,py35,py36,py37,linters,dist,insights
 skipsdist = True
 
 [testenv]
@@ -62,6 +62,10 @@ commands = pytest {posargs}
 basepython = python3.6
 commands = pytest {posargs}
 
+[testenv:py37]
+basepython = python3.7
+commands = pytest {posargs}
+
 [testenv:cover]
 commands = python setup.py test --coverage --testr-args={posargs}