add custom requirements file to list of checked requirements files

playbooks/roles/edxapp/defaults/main.yml

@@ -277,6 +277,7 @@ edxapp_chksum_req_files:
   - "{{ pre_requirements_file }}"
   - "{{ post_requirements_file }}"
   - "{{ base_requirements_file }}"
+  - "{{ custom_requirements_file }}"
   - "{{ paver_requirements_file }}"
   - "{{ sandbox_post_requirements }}"
   - "{{ sandbox_base_requirements }}"
@@ -555,6 +556,7 @@ local_requirements_file:  "{{ edxapp_code_dir }}/requirements/edx/local.txt"
 pre_requirements_file:    "{{ edxapp_code_dir }}/requirements/edx/pre.txt"
 post_requirements_file:   "{{ edxapp_code_dir }}/requirements/edx/post.txt"
 base_requirements_file:   "{{ edxapp_code_dir }}/requirements/edx/base.txt"
+custom_requirements_file:   "{{ edxapp_code_dir }}/requirements/edx/custom.txt"
 paver_requirements_file:   "{{ edxapp_code_dir }}/requirements/edx/paver.txt"
 github_requirements_file: "{{ edxapp_code_dir }}/requirements/edx/github.txt"
 private_requirements_file:   "{{ edxapp_code_dir }}/requirements/edx/edx-private.txt"