Fixed an issue when ee_pull_collections_from_hub was set to true, and…

… build_steps were not defined, an error was raised. (#138)

* add getting help

* fix build step bug

.ansible-lint

@@ -15,6 +15,7 @@ use_default_rules: true
 # verbosity: 1
 skip_list:
   - meta-runtime
+  - var-naming[no-role-prefix]
 kinds:
   - playbooks: "**/examples/*.{yml,yaml}"
   - tasks: "**/examples/tasks/*.yml"

changelogs/fragments/build_fixes.yml

@@ -0,0 +1,4 @@
+---
+bugfixes:
+  - Fixed an issue when ee_pull_collections_from_hub was set to true, and build_steps were not defined, an error was raised.
+...

roles/ee_builder/templates/execution_environment.yml.j2

@@ -32,17 +32,19 @@ additional_build_files:
 {% if (__execution_environment_definition.build_steps is defined and __execution_environment_definition.build_steps|length )  or
         (ee_pull_collections_from_hub) %}
 additional_build_steps:
-{% if ee_pull_collections_from_hub and 'prepend_galaxy' not in __execution_environment_definition.build_steps %}
+{% if ee_pull_collections_from_hub and (__execution_environment_definition.build_steps is not defined or (__execution_environment_definition.build_steps is defined and 'prepend_galaxy' not in __execution_environment_definition.build_steps)) %}
   prepend_galaxy:
     - ADD _build/configs/ansible.cfg /etc/ansible/ansible.cfg
 {% endif %}
+{% if __execution_environment_definition.build_steps is defined %}
 {% for key,value in __execution_environment_definition.build_steps.items() %}
 {{ key | indent(2, true) }}:
 {{ value | to_nice_yaml | indent(4, true) }}
 {%- if key == "prepend_galaxy" and ee_pull_collections_from_hub and 'prepend_galaxy' in __execution_environment_definition.build_steps %}
     - ADD _build/configs/ansible.cfg /etc/ansible/ansible.cfg
 {% endif %}
 {% endfor %}
+{% endif %}
 {% endif -%}
 
 {% if (__execution_environment_definition.images is defined and __execution_environment_definition.images|length ) or