Resolve "CI jobs failing due to change in Python package name"

Closes #23 (closed)

.gitlab-industrial-ci-kinetic-no-rosinstall.yml

@@ -13,7 +13,7 @@ stages:
   - postcheck
 
 before_script:
-  - apk add --update bash coreutils tar wget python
+  - apk add --update bash coreutils tar wget
 
 .industrial_ci:
   stage: build
@@ -95,6 +95,8 @@ clang_format:
 ## other options like pylint, but much faster and less strict
 ##########################################################
 python_syntax:
+  before_script:
+    - apk add --update python2
   stage: precheck
   script: python -m compileall -q .
   when: always