Update ceilometer zuul jobs and fix UT on python3

* Enable upload-git-mirror job to replicate to github.ibm.com
* Enable python3 job and drop py2 job
* Fixed the UT errors on python3
* Fixed the pep8: E501 line too long (83 > 79 characters)

Change-Id: I6a15ff396282032e91732eaad632ea65db7c18e0

.zuul.yaml

@@ -0,0 +1,105 @@
+- project:
+    templates:
+      - openstack-python3-ussuri-jobs
+    post:
+      jobs:
+        - ceilometer-zvm-upload-git-mirror
+
+- job:
+    name: ceilometer-zvm-upload-git-mirror
+    parent: upload-git-mirror
+    description: Mirrors x/ceilometer-zvm to iaasci/ceilometer-zvm
+    vars:
+      git_mirror_repository: iaasci/ceilometer-zvm
+    secrets:
+      - name: git_mirror_credentials
+        secret: ceilometer-zvm-secret
+        pass-to-parent: true
+
+- secret:
+    name: ceilometer-zvm-secret
+    data:
+      user: git
+      host: github.ibm.com
+      host_key: github.ibm.com ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC1K6pnwsCh8hFCqvzWkb1y3ajXervgfokIdZ/VIURIItVBIINtH5Ynupt2cLLBMYysYjR1I/P4VNZf7bX+HejjJqMf92psXQ1VToyKeNZ+i01CrhZko11157veidnMwVmKoCIdrKpsLgqthJ6kXLrTqaVIQ1sh3lKZ0tFRsqgiwNbstwhRZe/MyUoDuzHZQPooxsiy5dBO+LpkovCShwVfZ3380UyAfScPrUZcX2zY/qmGDz4puXOWj/CQupoe76JoVenfwrjfTw2I+GoPxpZK6R47akoAekCO+Dw8VW4NnTDR6L7eGkclltQSC7HQ9MiFDB4Z49ONWQwotLdttDr5
+      ssh_key: !encrypted/pkcs1-oaep
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+        - CqiG5yeA8ilVd3FxPsbSwRcHJGBDLyFyJ8o9i3Le0H81po7EZQxGov4w9eRcbriu/1lv8
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ceilometer_zvm/compute/virt/zvm/inspector.py

@@ -58,15 +58,18 @@ class ZVMInspector(virt_inspector.Inspector):
         nics_data = self._inspect_inst_data(instance, 'vnics')
         # Construct the final result
         for nic in nics_data:
-            yield virt_inspector.InterfaceStats(name=nic['nic_vdev'],
+            yield virt_inspector.InterfaceStats(
+                name=nic['nic_vdev'],
                 mac=None,
                 fref=None,
                 parameters=None,
                 rx_bytes=nic['nic_rx'],
+                rx_bytes_delta=nic['nic_rx_delta'],
                 rx_packets=nic['nic_fr_rx'],
                 rx_errors=None,
                 rx_drop=None,
                 tx_bytes=nic['nic_tx'],
+                tx_bytes_delta=nic['nic_tx_delta'],
                 tx_packets=nic['nic_fr_tx'],
                 tx_errors=None,
                 tx_drop=None
@@ -76,7 +79,7 @@ class ZVMInspector(virt_inspector.Inspector):
         inst_stats = self._inspect_inst_data(instance, 'stats')
         cpu_number = inst_stats['guest_cpus']
         used_cpu_time = (inst_stats['used_cpu_time_us'] * units.k)
-        used_mem_mb = inst_stats['used_mem_kb'] / units.Ki
+        used_mem_mb = inst_stats['used_mem_kb'] // units.Ki
         # Construct the final result
         return virt_inspector.InstanceStats(cpu_number=cpu_number,
                                             cpu_time=used_cpu_time,

ceilometer_zvm/tests/unit/compute/virt/zvm/test_inspector.py

@@ -47,7 +47,9 @@ class TestZVMInspector(unittest.TestCase):
                             'nic_fr_rx': 99999,
                             'nic_fr_tx': 99999,
                             'nic_rx': 9999999,
+                            'nic_rx_delta': 9999999,
                             'nic_tx': 9999999,
+                            'nic_tx_delta': 9999999,
                             'nic_fr_rx_dsc': 0,
                             'nic_fr_tx_dsc': 0,
                             'nic_fr_rx_err': 0,
@@ -57,7 +59,9 @@ class TestZVMInspector(unittest.TestCase):
                             'nic_fr_rx': 88888,
                             'nic_fr_tx': 88888,
                             'nic_rx': 8888888,
+                            'nic_rx_delta': 8888888,
                             'nic_tx': 8888888,
+                            'nic_tx_delta': 8888888,
                             'nic_fr_rx_dsc': 0,
                             'nic_fr_tx_dsc': 0,
                             'nic_fr_rx_err': 0,

tox.ini

@@ -1,9 +1,10 @@
 [tox]
 minversion = 1.6
-envlist = pep8,py27
+envlist = pep8,py27,py36,py37,py38
 skipsdist = True
 
 [testenv]
+whitelist_externals = *
 usedevelop = True
 install_command = pip install -U {opts} {packages}
 setenv =
@@ -11,17 +12,13 @@ setenv =
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
        -egit+https://github.com/openstack/ceilometer@master#egg=ceilometer
-commands = python setup.py testr --slowest --testr-args='{posargs}'
+commands = /bin/cp -r {toxinidir}/ceilometer_zvm/compute/virt/zvm \
+           {toxinidir}/.tox/{envname}/src/ceilometer/ceilometer/compute/virt/
+           python setup.py testr --slowest --testr-args='{posargs}'
 
 [testenv:pep8]
 commands = flake8
 
-[testenv:py27]
-whitelist_externals = git
-commands = /bin/cp -r {toxinidir}/ceilometer_zvm/compute/virt/zvm \
-            {toxinidir}/.tox/py27/src/ceilometer/ceilometer/compute/virt/
-           python setup.py testr --slowest --testr-args='{posargs}'
-
 [testenv:venv]
 commands = {posargs}