[patch] add conditional rendering for db2 parameters and fix workspace indentation

Author: terc1997

src/mas/devops/templates/pipelinerun-update.yml.j2

@@ -52,8 +52,14 @@ spec:
     # -------------------------------------------------------------------------
     - name: db2_namespace
       value: "{{ db2_namespace }}"
+{%- if db2_v12_upgrade is defined and db2_v12_upgrade != "" %}
     - name: db2_v12_upgrade
       value: "{{ db2_v12_upgrade }}"
+{%- endif %}
+{%- if db2_license_file is defined and db2_license_file != "" %}
+    - name: db2_license_file
+      value: "{{ db2_license_file }}"
+{%- endif %}
     - name: db2_channel
       value: "{{ db2_channel }}"
 {%- endif %}
@@ -159,7 +165,7 @@ spec:
     - name: aiservice_instance_ids
       value: "{{ aiservice_instance_ids }}"
 {%- endif %}
-workspaces:
+  workspaces:
     # The generated configuration files
     # -------------------------------------------------------------------------