feat(blocky): allow additional bootstrapdns (#7816)

**Description**
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⚒️ Fixes  #7797

**⚙️ Type of change**

- [ ] ⚙️ Feature/App addition
- [ ] 🪛 Bugfix
- [ ] ⚠️ Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] 🔃 Refactor of current code

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**✔️ Checklist:**

- [ ] ⚖️ My code follows the style guidelines of this project
- [ ] 👀 I have performed a self-review of my own code
- [ ] #️⃣ I have commented my code, particularly in hard-to-understand
areas
- [ ] 📄 I have made corresponding changes to the documentation
- [ ] ⚠️ My changes generate no new warnings
- [ ] 🧪 I have added tests to this description that prove my fix is
effective or that my feature works
- [ ] ⬆️ I increased versions for any altered app according to semantic
versioning

**➕ App addition**

If this PR is an app addition please make sure you have done the
following.

- [ ] 🪞 I have opened a PR on
[truecharts/containers](https://github.com/truecharts/containers) adding
the container to TrueCharts mirror repo.
- [ ] 🖼️ I have added an icon in the Chart's root directory called
`icon.png`

---

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---------

Signed-off-by: Stavros Kois <47820033+stavros-k@users.noreply.github.com>

charts/enterprise/blocky/questions.yaml

@@ -113,6 +113,37 @@ questions:
                   type: string
                   required: true
                   default: ""
+  - variable: additionalBootstrapDns
+    group: App Configuration
+    label: Additional Bootstrap DNS
+    schema:
+      type: list
+      show_if: [[ "bootstrapDns", "!=", {"upstream": "", "ips": []} ]]
+      default: []
+      items:
+        - variable: additionalBootstrapDnsEntry
+          label: Additional Bootstrap DNS Entry
+          schema:
+            additional_attrs: true
+            type: dict
+            attrs:
+              - variable: upstream
+                label: Upstream
+                schema:
+                  type: string
+                  default: ""
+              - variable: ips
+                label: IPs
+                schema:
+                  type: list
+                  default: []
+                  items:
+                    - variable: ipEntry
+                      label: IP Entry
+                      schema:
+                        type: string
+                        required: true
+                        default: ""
   - variable: filtering
     group: App Configuration
     label: Filtering

charts/enterprise/blocky/templates/_blockyConfig.tpl

@@ -99,15 +99,25 @@ hostsFile:
 
 {{- if or .Values.bootstrapDns.upstream .Values.bootstrapDns.ips }}
 bootstrapDns:
-{{- if .Values.bootstrapDns.upstream }}
-  upstream: {{ .Values.bootstrapDns.upstream }}
-{{- end }}
-{{- if .Values.bootstrapDns.ips }}
-  ips:
-{{- range $id, $value := .Values.bootstrapDns.ips }}
-    - {{ $value }}
-{{- end }}
-{{- end }}
+  {{- if .Values.bootstrapDns.upstream }}
+  - upstream: {{ .Values.bootstrapDns.upstream }}
+  {{- end }}
+  {{- if .Values.bootstrapDns.ips }}
+    ips:
+    {{- range $id, $value := .Values.bootstrapDns.ips }}
+      - {{ $value }}
+    {{- end }}
+  {{- end }}
+  {{/* Add additional Bootstrap DNS */}}
+  {{- range .Values.additionalBootstrapDns }}
+  {{- with .upstream }}
+  - upstream: {{ . }}
+  {{- end }}
+  {{- range $id, $value := .ips }}
+    ips:
+      - {{ $value }}
+  {{- end }}
+  {{- end }}
 {{- end }}
 
 {{- if or .Values.filtering.filtering }}

charts/enterprise/blocky/values.yaml

@@ -140,6 +140,12 @@ bootstrapDns:
   # -- IP's linked to upstream DoT/DoH DNS name
   ips: []
 
+# -- set additional bootstrap dns (not needed, only used if bootstrapDns is set)
+additionalBootstrapDns:
+  []
+  # - upstream: ""
+  #   ips: []
+
 # -- Return empty answer for these queries
 filtering:
   # -- Ensures filtering by query type