Move util to its separate project

It will make it easier later to have the proxy project depend on it, rather
than on the entire core project

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=222081994

gradle/core/build.gradle

@@ -145,7 +145,6 @@ dependencies {
   compile 'com.google.template:soy:2018-03-14'
   maybeRuntime 'com.googlecode.charts4j:charts4j:1.3'
   compile 'com.googlecode.json-simple:json-simple:1.1.1'
-  compile 'com.ibm.icu:icu4j:57.1'
   compile 'com.jcraft:jsch:0.1.53'
   maybeRuntime 'com.jcraft:jzlib:1.1.3'
   maybeRuntime 'com.squareup:javapoet:1.8.0'
@@ -216,11 +215,17 @@ dependencies {
   maybeRuntime 'org.tukaani:xz:1.5'
   maybeRuntime 'org.xerial.snappy:snappy-java:1.1.4-M3'
   compile 'org.yaml:snakeyaml:1.17'
+  maybeRuntime 'org.mortbay.jetty:jetty-util:6.1.26'
+  maybeRuntime 'org.slf4j:slf4j-api:1.7.16'
+  maybeRuntime 'org.tukaani:xz:1.5'
+  maybeRuntime 'org.xerial.snappy:snappy-java:1.1.4-M3'
+  testCompile 'org.yaml:snakeyaml:1.17'
   compile 'xerces:xmlParserAPIs:2.6.2'
   compile 'xpp3:xpp3:1.1.4c'
 
   // Known issue: nebula-lint misses inherited dependency.
   compile project(':third_party')
+  compile project(':util')
 
   // Include auto-value in compile until nebula-lint understands
   // annotationProcessor
@@ -232,9 +237,7 @@ dependencies {
   annotationProcessor 'com.google.dagger:dagger-compiler:2.15'
   testAnnotationProcessor 'com.google.dagger:dagger-compiler:2.15'
 
-  // Use compile to work around nebula bug. This should be testCompile.
-  compile 'com.google.appengine:appengine-testing:1.9.58'
-
+  testCompile 'com.google.appengine:appengine-testing:1.9.58'
   testCompile 'com.google.guava:guava-testlib:25.0-jre'
   testCompile 'com.google.monitoring-client:contrib:1.0.4'
   testCompile 'com.google.truth:truth:0.42'
@@ -406,6 +409,17 @@ compileJava.dependsOn soyToJava
 stylesheetsToJavascript.dependsOn processResources
 classes.dependsOn stylesheetsToJavascript
 
+// Make testing artifacts available to be depended up on by other projects.
+// TODO: factor out google.registry.testing to be a separate project.
+task testJar(type: Jar) {
+  classifier = 'test'
+  from sourceSets.test.output
+}
+
+artifacts {
+  testRuntime testJar
+}
+
 task fragileTest(type: Test) {
   // Common exclude pattern. See README in parent directory for explanation.
   exclude "**/*TestCase.*", "**/*TestSuite.*"