modify udt2udt test to remove unneccessary dependency on configmap (#9923)

# Description

current strategy does not take care of the order in which resources are
created.
so if configmap was not created before the udt, then the test errors
out. removing this dependency.

## Type of change


- This pull request is a minor refactor, code cleanup, test improvement,
or other maintenance task and doesn't change the functionality of Radius
(issue link optional).

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---------

Signed-off-by: nithyatsu <[email protected]>

Author: nithyatsu

test/functional-portable/dynamicrp/noncloud/resources/testdata/udt2udt-connection-tf.bicep

@@ -67,16 +67,6 @@ resource udttoudtchild 'Test.Resources/externalResource@2023-10-01-preview' = {
   properties: {
     environment: udttoudtenv.id
     application: udttoudtapp.id
-    configMap: string(udttoudttfcfgmap.data)
-  }
-}
-
-resource udttoudttfcfgmap 'core/ConfigMap@v1' = {
-  metadata: {
-    name: 'udttoudttfcfgmap'
-  }
-  data: {
-    'app1.sample.properties': 'property1=value1\nproperty2=value2'
-    'app2.sample.properties': 'property3=value3\nproperty4=value4'
+    configMap: '{"app1.sample.properties":"property1=value1\\nproperty2=value2","app2.sample.properties":"property3=value3\\nproperty4=value4"}'
   }
 }

test/functional-portable/dynamicrp/noncloud/resources/testdata/udt2udt-connection.bicep

@@ -70,16 +70,6 @@ resource udttoudtchild 'Test.Resources/externalResource@2023-10-01-preview' = {
   properties: {
     environment: udttoudtenv.id
     application: udttoudtapp.id
-    configMap: string(udttoudtcfgmap.data)
-  }
-}
-
-resource udttoudtcfgmap 'core/ConfigMap@v1' = {
-  metadata: {
-    name: 'udttoudtcfgmap'
-  }
-  data: {
-    'app1.sample.properties': 'property1=value1\nproperty2=value2'
-    'app2.sample.properties': 'property3=value3\nproperty4=value4'
+    configMap: '{"app1.sample.properties":"property1=value1\\nproperty2=value2","app2.sample.properties":"property3=value3\\nproperty4=value4"}'
   }
 }