Enable log collection after functional testing

This change enables log collection within the gate so that further analysis
on gate tasks can be performed post build. This is very useful when
debugging problems.

Change-Id: I4b658c1fac7ea41914c62953e020580758601e24
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

tox.ini

@@ -152,6 +152,11 @@ install_command =
     pip install -U --force-reinstall {opts} {packages}
 
 [testenv:functional]
+# Ignore_errors is set to true so that the logs are collected at the
+#  end of the run. This will not produce a failse positive. Any
+#  exception will be mark the run as failed and exit 1 after all of
+#  the commands have been iterated through.
+ignore_errors = True
 # NOTE(automagically): this target tests neutron with linuxbridge
 install_command =
     {[testenv:func_base]install_command}
@@ -165,6 +170,9 @@ commands =
                      -e "rolename={toxinidir}" \
                      -e "install_test_packages=True" \
                      {toxinidir}/tests/test.yml -vvvv
+    bash -c 'mkdir -p {toxinidir}/logs'
+    bash -c 'rsync -av --ignore-errors /var/log/ /openstack/log/ {toxinidir}/logs/ || true'
+
 
 [testenv:func_ovs]
 # NOTE(automagically): this target tests neutron with ovs
@@ -180,6 +188,9 @@ commands =
                      -e "rolename={toxinidir}" \
                      -e "install_test_packages=True" \
                      {toxinidir}/tests/test.yml -vvvv
+    bash -c 'mkdir -p {toxinidir}/logs'
+    bash -c 'rsync -av --ignore-errors /var/log/ /openstack/log/ {toxinidir}/logs/ || true'
+
 
 [testenv:linters]
 deps =