[CI] rework gitlab.ci for having pyqt4-jessie-py3.4, pyqt5-jessie-py3.4, pyside2-stretch-py3.7

.gitlab-ci.yml

+test:python3.4-jessie-pyqt4:
+  type: test
+  image: docker-registry.esrf.fr/dau/tomwer:python3.4-jessie-pyqt4
+  script:
+    - arch
+    - find / -name "libgcc_s.so.1"
+    - export LD_LIBRARY_PATH=/lib/i386-linux-gnu/:${LD_LIBRARY_PATH}
+    - export LD_LIBRARY_PATH=/lib/x86_64-linux-gnu/:${LD_LIBRARY_PATH}
+    - export ORANGE_WEB_LOG='False'
+    - echo $LD_LIBRARY_PATH
+    - export http_proxy=http://proxy.esrf.fr:3128/
+    - export https_proxy=http://proxy.esrf.fr:3128/
+    - python --version
+    - python -m pip install pip --upgrade
+    - python -m pip install setuptools --upgrade
+    - python -m pip install matplotlib
+    - source ./ci/install_scripts.sh
+    - install_orange3 'master'
+    - python -m pip install -r requirements.txt
+    - python -m pip install .
+    - python -m tomwer --help
+    - /usr/bin/xvfb-run --server-args="-screen 0 1024x768x24" -a tomwer test -v
+
 
-test:debian.9-python3.6-PyQt5:
+test:python3.4-jessie-pyqt5:
   type: test
-  image: docker-registry.esrf.fr/dau/tomwer:python3.6-stretch
+  image: docker-registry.esrf.fr/dau/tomwer:python3.4-jessie-pyqt5
   script:
     - arch
     - find / -name "libgcc_s.so.1"
@@ -25,9 +48,9 @@ test:debian.9-python3.6-PyQt5:
     - /usr/bin/xvfb-run --server-args="-screen 0 1024x768x24" -a tomwer test -v
 
 
-test:debian.9-python3.4-PySide2:
+test:python3.7-stretch-pyside2:
   type: test
-  image: docker-registry.esrf.fr/dau/tomwer:python3.4-stretch
+  image: docker-registry.esrf.fr/dau/tomwer:python3.7-stretch
   script:
     - arch
     - find / -name "libgcc_s.so.1"
@@ -40,8 +63,8 @@ test:debian.9-python3.4-PySide2:
     - python --version
     - python -m pip install pip --upgrade
     - python -m pip install setuptools --upgrade
-    - python -m pip install PyQt4
     - python -m pip install matplotlib
+    - python -m pip install PySide2
     - source ./ci/install_scripts.sh
     - install_orange3 'master'
     - install_anyqt 'master'