Copy dependency graph init script to Gradle Home

- Temporarily use a hard-coded plugin for convenience

src/cache-base.ts

@@ -172,12 +172,21 @@ export class GradleStateCache {
     }
 
     private initializeGradleUserHome(gradleUserHome: string, initScriptsDir: string): void {
-        const initScriptFilenames = ['build-result-capture.init.gradle', 'build-result-capture-service.plugin.groovy']
+        const initScriptFilenames = [
+            'build-result-capture.init.gradle',
+            'build-result-capture-service.plugin.groovy',
+            'github-dependency-graph.init.gradle'
+        ]
         for (const initScriptFilename of initScriptFilenames) {
             const initScriptContent = this.readInitScriptAsString(initScriptFilename)
             const initScriptPath = path.resolve(initScriptsDir, initScriptFilename)
             fs.writeFileSync(initScriptPath, initScriptContent)
         }
+
+        // TODO:DAZ Remove this when we use a real dependency again
+        const depGraphJar = 'github-dependency-graph-gradle-plugin-0.0.3.jar'
+        const jarFile = path.resolve(__dirname, '..', '..', 'src', 'resources', 'init-scripts', depGraphJar)
+        fs.copyFileSync(jarFile, path.resolve(initScriptsDir, depGraphJar))
     }
 
     private readInitScriptAsString(resource: string): string {

src/resources/init-scripts/github-dependency-graph.init.gradle

@@ -1,12 +1,7 @@
-import org.gradle.github.GitHubDependencyGraphPlugin
+// TODO:DAZ This should be conditionally applied, since the script may be present when not required.
 initscript {
-  repositories {
-    maven {
-      url = uri("https://plugins.gradle.org/m2/")
-    }
-  }
   dependencies {
-    classpath("org.gradle:github-dependency-graph-gradle-plugin:+")
+    classpath files("github-dependency-graph-gradle-plugin-0.0.3.jar")
   }
 }
-apply plugin: GitHubDependencyGraphPlugin
+apply plugin: org.gradle.github.GitHubDependencyGraphPlugin