Add ability to fetch dependencies. (#44)

Authored-by: Sean Goller <sgoller@pivotal.io>
diff --git a/build.gradle b/build.gradle
index 87522c0..aaf8149 100644
--- a/build.gradle
+++ b/build.gradle
@@ -49,3 +49,4 @@
 
 apply from: "gradle/spotless.gradle"
 apply from: "gradle/rat.gradle"
+apply from: "gradle/resolve-dependencies.gradle"
diff --git a/gradle/resolve-dependencies.gradle b/gradle/resolve-dependencies.gradle
new file mode 100644
index 0000000..fa67a45
--- /dev/null
+++ b/gradle/resolve-dependencies.gradle
@@ -0,0 +1,35 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+task resolveDependencies {
+  doLast {
+    project.rootProject.allprojects.each { subProject ->
+      subProject.buildscript.configurations.each { configuration ->
+        resolveConfiguration(configuration)
+      }
+      subProject.configurations.each { configuration ->
+        resolveConfiguration(configuration)
+      }
+    }
+  }
+}
+
+void resolveConfiguration(configuration) {
+  if (configuration.canBeResolved) {
+    configuration.resolve()
+  }
+}