fix: Error build image

Fail to build skyline image. We should upgrade the pip and setuptools
version.

Remove irrelevant files for skyline-tox-lint-py38 job to retain one job
to trigger zuul.

Refer: https://github.com/python-poetry/poetry/issues/3329

Change-Id: I444faa3aefaa8ef8cfeb5284bc2a7a49bb0cb91b

.zuul.yaml

@@ -66,16 +66,7 @@
               - ^.*\.md$
               - ^libs/skyline-console$
               - ^kolla/.*$
-        - skyline-tox-lint-py38:
-            irrelevant-files:
-              - ^container/.*$
-              - ^devstack/.*$
-              - ^docs/.*$
-              - ^tools/.*$
-              - ^.*\.rst$
-              - ^.*\.md$
-              - ^libs/skyline-console$
-              - ^kolla/.*$
+        - skyline-tox-lint-py38
         - skyline-functional-devstack:
             irrelevant-files:
               - ^container/.*$
@@ -96,16 +87,7 @@
               - ^.*\.md$
               - ^libs/skyline-console$
               - ^kolla/.*$
-        - skyline-tox-lint-py38:
-            irrelevant-files:
-              - ^container/.*$
-              - ^devstack/.*$
-              - ^docs/.*$
-              - ^tools/.*$
-              - ^.*\.rst$
-              - ^.*\.md$
-              - ^libs/skyline-console$
-              - ^kolla/.*$
+        - skyline-tox-lint-py38
         - skyline-functional-devstack:
             irrelevant-files:
               - ^container/.*$

container/Dockerfile

@@ -37,6 +37,7 @@ RUN export LANG=C.UTF-8 \
     && rm -rf /usr/bin/python /usr/bin/pip \
     && ln -s /usr/bin/python3 /usr/bin/python \
     && ln -s /usr/bin/pip3 /usr/bin/pip \
+    && pip install -U pip setuptools'<58.0.0' \
     && pip install poetry!=1.1.8 \
     && poetry config virtualenvs.create false \
     && mkdir -p /etc/skyline /var/log/skyline/ /var/lib/skyline \