Enable zuul unit tests for stx-gui

Enable linters

Story: 2003863
Task: 26695

Change-Id: I4a6e2029bdf9c83422dd968c39341f2429b6e312
Signed-off-by: Kristine Bujold <kristine.bujold@windriver.com>

.zuul.yaml

@@ -6,10 +6,12 @@
       jobs:
         - build-openstack-releasenotes
         - openstack-tox-pep8
+        - openstack-tox-linters
     gate:
       jobs:
         - build-openstack-releasenotes
         - openstack-tox-pep8
+        - openstack-tox-linters
     post:
       jobs:
         - publish-stx-tox

test-requirements.txt

@@ -20,7 +20,6 @@ nosehtmloutput>=0.0.3 # Apache-2.0
 nosexcover # BSD
 openstack.nose-plugin>=0.7 # Apache-2.0
 oslosphinx!=3.4.0,>=2.5.0 # Apache-2.0
-reno>=1.8.0 # Apache2
 python-cephclient
 requests>=2.10.0 # Apache-2.0
 selenium>=2.50.1 # Apache-2.0

tox.ini

@@ -23,7 +23,6 @@ commands =
          -name \*.sh                          \
          -print0 | xargs --no-run-if-empty -0 bashate -v"
   bash -c "find {toxinidir}        \
-            \( -name middleware/io-monitor/recipes-common/io-monitor/io-monitor/io_monitor/test-tools/yaml/* -prune \) \
             -o \( -name .tox -prune \)         \
             -o -type f -name '*.yaml'       \
             -print0 | xargs --no-run-if-empty -0 yamllint"