Set PYTHON_VERSION for all builds

.gitlab-ci.yml

@@ -61,6 +61,7 @@ core_build_linux_27:
 
 core_wheels_linux_27:
   <<: *core_wheels_job
+  variables: *core_build_linux_27_variables
   dependencies:
     - core_build_linux_27
   tags:
@@ -76,6 +77,7 @@ extra_build_linux_27:
 
 extra_wheels_linux_27:
   <<: *extra_wheels_job
+  variables: *core_build_linux_27_variables
   dependencies:
     - extra_build_linux_27
   tags:
@@ -94,6 +96,7 @@ core_build_linux_34:
 
 core_wheels_linux_34:
   <<: *core_wheels_job
+  variables: *core_build_linux_34_variables
   dependencies:
     - core_build_linux_34
   tags:
@@ -111,6 +114,7 @@ extra_build_linux_34:
 
 extra_wheels_linux_34:
   <<: *extra_wheels_job
+  variables: *core_build_linux_34_variables
   dependencies:
     - extra_build_linux_34
   tags:
@@ -127,6 +131,7 @@ core_build_linux_35:
 
 core_wheels_linux_35:
   <<: *core_wheels_job
+  variables: *core_build_linux_35_variables
   dependencies:
     - core_build_linux_35
   tags:
@@ -142,6 +147,7 @@ extra_build_linux_35:
 
 extra_wheels_linux_35:
   <<: *extra_wheels_job
+  variables: *core_build_linux_35_variables
   dependencies:
     - extra_build_linux_35
   tags:
@@ -158,6 +164,7 @@ core_build_macosx_27:
 
 core_wheels_macosx_27:
   <<: *core_wheels_job
+  variables: *core_build_macosx_27_variables
   dependencies:
     - core_build_macosx_27
   tags:
@@ -173,6 +180,7 @@ extra_build_macosx_27:
 
 extra_wheels_macosx_27:
   <<: *extra_wheels_job
+  variables: *core_build_macosx_27_variables
   dependencies:
     - extra_build_macosx_27
   tags:
@@ -191,6 +199,7 @@ core_build_macosx_34:
 
 core_wheels_macosx_34:
   <<: *core_wheels_job
+  variables: *core_build_macosx_34_variables
   dependencies:
     - core_build_macosx_34
   tags:
@@ -208,6 +217,7 @@ extra_build_macosx_34:
 
 extra_wheels_macosx_34:
   <<: *extra_wheels_job
+  variables: *core_build_macosx_34_variables
   dependencies:
     - extra_build_macosx_34
   tags:
@@ -224,6 +234,7 @@ core_build_macosx_35:
 
 core_wheels_macosx_35:
   <<: *core_wheels_job
+  variables: *core_build_macosx_35_variables
   dependencies:
     - core_build_macosx_35
   tags:
@@ -239,6 +250,7 @@ extra_build_macosx_35:
 
 extra_wheels_macosx_35:
   <<: *extra_wheels_job
+  variables: *core_build_macosx_35_variables
   dependencies:
     - extra_build_macosx_35
   tags: