Fixes #38094 - Support --els switch in convert2rhel

app/views/templates/script/convert2rhel_analyze.erb

@@ -5,7 +5,19 @@ model: JobTemplate
 job_category: Convert 2 RHEL
 provider_type: script
 kind: job_template
+- name: ELS
+  required: true
+  input_type: user
+  description: Use an Extended Lifecycle Support (ELS) add-on subscription
+  advanced: false
+  value_type: plain
+  options: "yes\r\nno"
+  default: "yes"
+  hidden_value: false
 %>
+<%-
+  els = input('ELS') == "yes" ? "--els" : ""
+-%>
 <% if @host.operatingsystem.family == 'Redhat' -%>
 if ! [ $(id -u) -eq 0 ]; then
   echo "You must run convert2rhel as a root user."
@@ -18,7 +30,7 @@ fi
 
 export CONVERT2RHEL_THROUGH_FOREMAN=1
 
-/usr/bin/convert2rhel analyze -y
+/usr/bin/convert2rhel analyze -y <%= els %>
 
 # Workaround for https://issues.redhat.com/browse/RHELC-1280
 subscription-manager facts --update