Correct global_pins depth

In https://review.openstack.org/350352 the repo_build process
implemented the test vars and changes to the constraints build
which caters properly for global pins, but the data set used
was incorrectly mapped from the py_pkgs lookup output.

This patch fixes the depth, tests and template to use the
correct depth.

Related-Bug: #1605846
Closes-Bug: #1609056
Change-Id: Ic8959fd27b4012d569aef1b9ddd1d7be40ed49e0

templates/requirements_constraints.txt.j2

@@ -21,7 +21,7 @@
 # Global pins set through the file global-requirement-pins.txt
 #
 {% set global_pin_packages = [] %}
-{% for global_pin in local_packages.results.0.item.role_requirement_files.default.global_pins.pinned_packages %}
+{% for global_pin in local_packages.results.0.item.role_requirement_files.global_pins.pinned_packages %}
 {%   set global_pin_package_name = global_pin | regex_replace('(<=|<|==).*$','') %}
 {%   set _ = global_pin_packages.append(global_pin_package_name) %}
 {#   we want to ensure that repo_build_upper_constraints_overrides take the highest precedence #}

tests/test-repo-build.yml

@@ -88,7 +88,7 @@
       set_fact:
         global_pins_list: >
           {%- set global_pins = [] %}
-          {%- for pin in local_packages.results.0.item.role_requirement_files.default.global_pins.pinned_packages %}
+          {%- for pin in local_packages.results.0.item.role_requirement_files.global_pins.pinned_packages %}
           {%-   set name = pin | regex_replace('(>=|<=|>|<|==|~=|!=).*$','') %}
           {%-   set name_normalized = name | replace('-', '_') | lower %}
           {%-   set _ = global_pins.append(name_normalized) %}
@@ -105,7 +105,7 @@
     - name: Ensure that global pins have been applied
       assert:
         that: item in requirements_constraints_content
-      with_items: "{{ local_packages.results.0.item.role_requirement_files.default.global_pins.pinned_packages }}"
+      with_items: "{{ local_packages.results.0.item.role_requirement_files.global_pins.pinned_packages }}"
       when:
         - item | regex_replace('(>=|<=|>|<|==|~=|!=).*$','') not in upper_constraints_override_list
     - name: Ensure that upper constraints overrides are applied

tests/test-vars.yml

@@ -458,8 +458,8 @@ local_packages:
               - "pip==8.1.2"
               - "setuptools==25.1.0"
               - "wheel==0.29.0"
-            global_pins:
-              pinned_packages:
-                - "pip==8.1.2"
-                - "setuptools==25.1.0"
-                - "wheel==0.29.0"
+          global_pins:
+            pinned_packages:
+              - "pip==8.1.2"
+              - "setuptools==25.1.0"
+              - "wheel==0.29.0"