Add environment token for id-verification faq page

In order for the better experience of the user there is a need to
add environment token for the id-verification faq page so that
it can easily be accessed in platform.

LEARNER-5042

playbooks/roles/edxapp/defaults/main.yml

@@ -376,6 +376,7 @@ EDXAPP_ENABLE_MKTG_SITE: false
 EDXAPP_MKTG_URL_LINK_MAP: {}
 EDXAPP_MKTG_URLS: {}
 EDXAPP_SUPPORT_SITE_LINK: ''
+EDXAPP_ID_VERIFICATION_SUPPORT_LINK: ''
 EDXAPP_ACTIVATION_EMAIL_SUPPORT_LINK: ''
 EDXAPP_PASSWORD_RESET_SUPPORT_LINK: ''
 EDXAPP_EDXMKTG_USER_INFO_COOKIE_NAME: "edx-user-info"
@@ -1137,6 +1138,7 @@ generic_env_config:  &edxapp_generic_env
   MKTG_URL_LINK_MAP: "{{ EDXAPP_MKTG_URL_LINK_MAP }}"
   MKTG_URLS: "{{ EDXAPP_MKTG_URLS }}"
   SUPPORT_SITE_LINK: "{{ EDXAPP_SUPPORT_SITE_LINK }}"
+  ID_VERIFICATION_SUPPORT_LINK: "{{ EDXAPP_ID_VERIFICATION_SUPPORT_LINK }}"
   ACTIVATION_EMAIL_SUPPORT_LINK: "{{ EDXAPP_ACTIVATION_EMAIL_SUPPORT_LINK }}"
   PASSWORD_RESET_SUPPORT_LINK: "{{ EDXAPP_PASSWORD_RESET_SUPPORT_LINK }}"
   CDN_VIDEO_URLS: "{{ CDN_VIDEO_URLS }}"