fix(tests): place vector_enabled conditional at column 0

The `{% if vector_enabled -%}` and `{%- endif %}` blocks had
6 leading spaces. When vector_enabled was false, jinja2's strip
markers joined the leading whitespace of both blocks, putting
YAMLEOF at 12 spaces in the rendered output. After the kuttl
YAML block scalar strips 6 common-leading spaces, YAMLEOF ended
up at 6 spaces inside the script body, but the heredoc opener
is `<<'YAMLEOF'` (not `<<-`), which requires the terminator at
column 0. The heredoc therefore never closed and `\$(...)` never
terminated, producing `Syntax error: end of file unexpected
(expecting ")")` from dash.

Moving `{% if %}` and `{% endif %}` to column 0 (no strip markers)
mirrors kafka-operator's 34-assert.yaml.j2 pattern and renders
both branches with YAMLEOF at the correct indent.

Verified:
- non-vector render: 8 scripts pass against
  kuttl-test-fluent-mastodon
- vector render heredoc parses to the 5 expected keys
  (jvm.config, log4j2.properties, runtime.properties,
  security.properties, vector.yaml)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: maltesander

tests/templates/kuttl/smoke/53-assert.yaml.j2

@@ -724,10 +724,10 @@ commands:
       security.properties: |
         networkaddress.cache.negative.ttl=0
         networkaddress.cache.ttl=30
-      {% if vector_enabled -%}
+{% if vector_enabled %}
       vector.yaml: |
 {{ vector_yaml | replace("__ROLE__", "broker") | indent(8, true) }}
-      {%- endif %}
+{% endif %}
       YAMLEOF
       )
       actual=$(kubectl -n $NAMESPACE get cm druid-broker-default -o yaml \
@@ -830,10 +830,10 @@ commands:
       security.properties: |
         networkaddress.cache.negative.ttl=0
         networkaddress.cache.ttl=30
-      {% if vector_enabled -%}
+{% if vector_enabled %}
       vector.yaml: |
 {{ vector_yaml | replace("__ROLE__", "coordinator") | indent(8, true) }}
-      {%- endif %}
+{% endif %}
       YAMLEOF
       )
       actual=$(kubectl -n $NAMESPACE get cm druid-coordinator-default -o yaml \
@@ -936,10 +936,10 @@ commands:
       security.properties: |
         networkaddress.cache.negative.ttl=0
         networkaddress.cache.ttl=30
-      {% if vector_enabled -%}
+{% if vector_enabled %}
       vector.yaml: |
 {{ vector_yaml | replace("__ROLE__", "historical") | indent(8, true) }}
-      {%- endif %}
+{% endif %}
       YAMLEOF
       )
       actual=$(kubectl -n $NAMESPACE get cm druid-historical-default -o yaml \
@@ -1039,10 +1039,10 @@ commands:
         druid.indexer.runner.javaOptsArray=["-Djavax.net.ssl.trustStore\=/stackable/truststore.p12",\ "-Djavax.net.ssl.trustStorePassword\=changeit",\ "-Djavax.net.ssl.trustStoreType\=pkcs12"]
         networkaddress.cache.negative.ttl=0
         networkaddress.cache.ttl=30
-      {% if vector_enabled -%}
+{% if vector_enabled %}
       vector.yaml: |
 {{ vector_yaml | replace("__ROLE__", "middlemanager") | indent(8, true) }}
-      {%- endif %}
+{% endif %}
       YAMLEOF
       )
       actual=$(kubectl -n $NAMESPACE get cm druid-middlemanager-default -o yaml \
@@ -1140,10 +1140,10 @@ commands:
       security.properties: |
         networkaddress.cache.negative.ttl=0
         networkaddress.cache.ttl=30
-      {% if vector_enabled -%}
+{% if vector_enabled %}
       vector.yaml: |
 {{ vector_yaml | replace("__ROLE__", "router") | indent(8, true) }}
-      {%- endif %}
+{% endif %}
       YAMLEOF
       )
       actual=$(kubectl -n $NAMESPACE get cm druid-router-default -o yaml \