Configure faster CI job when pushing branches other than kinetic-devel

Follow up to tecnalia_robotics/flexbotics/flexbotics_legacy!25.

.gitlab-industrial-ci-kinetic-with-rosinstall.yml

@@ -14,7 +14,7 @@ stages:
 before_script:
   - apk add --update bash coreutils tar wget python
 
-industrial_ci_kinetic:
+.industrial_ci_kinetic_base:
   stage: build
   before_script:
     - apk add --update bash coreutils tar
@@ -27,6 +27,18 @@ industrial_ci_kinetic:
     ROSINSTALL_FILENAME: ".rosinstall"
   when: always
 
+industrial_ci_kinetic:
+  extends: .industrial_ci_kinetic_base
+  only:
+    - kinetic-devel
+
+industrial_ci_kinetic_fast:
+  extends: .industrial_ci_kinetic_base
+  except:
+    - kinetic-devel
+  variables:
+    DOCKER_BASE_IMAGE: "tecnaliarobotics/flxbtcs:post_rosdep"
+
 ##########################################################
 ## Simple check for basic Python syntax errors; this is much less thorough than
 ## other options like pylint, but much faster and less strict