.Net: Fixed integration tests (#6130)

### Motivation and Context

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Fixed integration tests by updating link to plugins folder based on
changes in this PR:
#6116

### Contribution Checklist

<!-- Before submitting this PR, please make sure: -->

- [x] The code builds clean without any errors or warnings
- [x] The PR follows the [SK Contribution
Guidelines](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md)
and the [pre-submission formatting
script](https://github.com/microsoft/semantic-kernel/blob/main/CONTRIBUTING.md#development-scripts)
raises no violations
- [x] All unit tests pass, and I have added new tests where possible
- [x] I didn't break anyone 😄

dotnet/samples/Concepts/Memory/SemanticTextMemory_Building.cs

@@ -94,7 +94,7 @@ private async Task RunExampleAsync(ISemanticTextMemory memory)
         Query: Can I build a chat with SK?
 
         Result 1:
-          URL:     : https://github.com/microsoft/semantic-kernel/tree/main/samples/plugins/ChatPlugin/ChatGPT
+          URL:     : https://github.com/microsoft/semantic-kernel/tree/main/prompt_template_samples/ChatPlugin/ChatGPT
           Title    : Sample demonstrating how to create a chat plugin interfacing with ChatGPT
 
         Result 2:
@@ -159,9 +159,9 @@ private async Task StoreMemoryAsync(ISemanticTextMemory memory)
                 = "README: Installation, getting started, and how to contribute",
             ["https://github.com/microsoft/semantic-kernel/blob/main/dotnet/notebooks/02-running-prompts-from-file.ipynb"]
                 = "Jupyter notebook describing how to pass prompts from a file to a semantic plugin or function",
-            ["https://github.com/microsoft/semantic-kernel/blob/main/dotnet/notebooks//00-getting-started.ipynb"]
+            ["https://github.com/microsoft/semantic-kernel/blob/main/dotnet/notebooks/00-getting-started.ipynb"]
                 = "Jupyter notebook describing how to get started with the Semantic Kernel",
-            ["https://github.com/microsoft/semantic-kernel/tree/main/samples/plugins/ChatPlugin/ChatGPT"]
+            ["https://github.com/microsoft/semantic-kernel/tree/main/prompt_template_samples/ChatPlugin/ChatGPT"]
                 = "Sample demonstrating how to create a chat plugin interfacing with ChatGPT",
             ["https://github.com/microsoft/semantic-kernel/blob/main/dotnet/src/Plugins/Plugins.Memory/VolatileMemoryStore.cs"]
                 = "C# class that defines a volatile embedding store",

dotnet/samples/Demos/TelemetryWithAppInsights/RepoUtils/RepoFiles.cs

@@ -6,13 +6,12 @@
 internal static class RepoFiles
 {
     /// <summary>
-    /// Scan the local folders from the repo, looking for "samples/plugins" folder.
+    /// Scan the local folders from the repo, looking for "prompt_template_samples" folder.
     /// </summary>
-    /// <returns>The full path to samples/plugins</returns>
+    /// <returns>The full path to prompt_template_samples</returns>
     public static string SamplePluginsPath()
     {
-        const string Parent = "samples";
-        const string Folder = "plugins";
+        const string Folder = "prompt_template_samples";
 
         static bool SearchPath(string pathToFind, out string result, int maxAttempts = 10)
         {
@@ -28,8 +27,7 @@ static bool SearchPath(string pathToFind, out string result, int maxAttempts = 1
             return found;
         }
 
-        if (!SearchPath(Parent + Path.DirectorySeparatorChar + Folder, out string path)
-            && !SearchPath(Folder, out path))
+        if (!SearchPath(Folder, out var path))
         {
             throw new DirectoryNotFoundException("Plugins directory not found. The app needs the plugins from the repo to work.");
         }

dotnet/src/IntegrationTests/TestHelpers.cs

@@ -10,9 +10,11 @@ namespace SemanticKernel.IntegrationTests;
 
 internal static class TestHelpers
 {
+    private const string PluginsFolder = "../../../../../../prompt_template_samples";
+
     internal static void ImportAllSamplePlugins(Kernel kernel)
     {
-        ImportSamplePromptFunctions(kernel, "../../../../../../samples/plugins",
+        ImportSamplePromptFunctions(kernel, PluginsFolder,
             "ChatPlugin",
             "SummarizePlugin",
             "WriterPlugin",
@@ -33,7 +35,7 @@ internal static void ImportAllSampleSkills(Kernel kernel)
 
     internal static IReadOnlyKernelPluginCollection ImportSamplePlugins(Kernel kernel, params string[] pluginNames)
     {
-        return ImportSamplePromptFunctions(kernel, "../../../../../../samples/plugins", pluginNames);
+        return ImportSamplePromptFunctions(kernel, PluginsFolder, pluginNames);
     }
 
     internal static IReadOnlyKernelPluginCollection ImportSamplePromptFunctions(Kernel kernel, string path, params string[] pluginNames)

dotnet/src/InternalUtilities/samples/InternalUtilities/RepoFiles.cs

@@ -5,13 +5,12 @@
 public static class RepoFiles
 {
     /// <summary>
-    /// Scan the local folders from the repo, looking for "samples/plugins" folder.
+    /// Scan the local folders from the repo, looking for "prompt_template_samples" folder.
     /// </summary>
-    /// <returns>The full path to samples/plugins</returns>
+    /// <returns>The full path to prompt_template_samples folder.</returns>
     public static string SamplePluginsPath()
     {
-        const string Parent = "samples";
-        const string Folder = "plugins";
+        const string Folder = "prompt_template_samples";
 
         static bool SearchPath(string pathToFind, out string result, int maxAttempts = 10)
         {
@@ -27,8 +26,7 @@ static bool SearchPath(string pathToFind, out string result, int maxAttempts = 1
             return found;
         }
 
-        if (!SearchPath(Parent + Path.DirectorySeparatorChar + Folder, out string path)
-            && !SearchPath(Folder, out path))
+        if (!SearchPath(Folder, out var path))
         {
             throw new YourAppException("Plugins directory not found. The app needs the plugins from the repo to work.");
         }

dotnet/src/SemanticKernel.Core/KernelExtensions.cs

@@ -447,7 +447,7 @@ public static IKernelBuilderPlugins AddFromFunctions(this IKernelBuilderPlugins
     ///             |__ config.json           #     settings (optional file)
     /// </code>
     /// <para>
-    /// See https://github.com/microsoft/semantic-kernel/tree/main/samples/plugins for examples in the Semantic Kernel repository.
+    /// See https://github.com/microsoft/semantic-kernel/tree/main/prompt_template_samples for examples in the Semantic Kernel repository.
     /// </para>
     /// </remarks>
     /// <param name="kernel">The <see cref="Kernel"/> containing services, plugins, and other state for use throughout the operation.</param>
@@ -555,7 +555,7 @@ public static IKernelBuilderPlugins AddFromFunctions(this IKernelBuilderPlugins
     ///             |__ config.json           #     settings (optional file)
     /// </code>
     /// <para>
-    /// See https://github.com/microsoft/semantic-kernel/tree/main/samples/plugins for examples in the Semantic Kernel repository.
+    /// See https://github.com/microsoft/semantic-kernel/tree/main/prompt_template_samples for examples in the Semantic Kernel repository.
     /// </para>
     /// </remarks>
     /// <param name="kernel">The <see cref="Kernel"/> containing services, plugins, and other state for use throughout the operation.</param>
@@ -603,7 +603,7 @@ public static IKernelBuilderPlugins AddFromFunctions(this IKernelBuilderPlugins
     ///             |__ config.json           #     settings (optional file)
     /// </code>
     /// <para>
-    /// See https://github.com/microsoft/semantic-kernel/tree/main/samples/plugins for examples in the Semantic Kernel repository.
+    /// See https://github.com/microsoft/semantic-kernel/tree/main/prompt_template_samples for examples in the Semantic Kernel repository.
     /// </para>
     /// </remarks>
     /// <param name="plugins">The plugin collection to which the new plugin should be added.</param>