Update to bazel 2

Author: georgewfraser

src/test/examples/bazel-project/WORKSPACE

@@ -1,6 +1,24 @@
-maven_jar(
-    name = "com_google_guava_guava",
-    artifact = "com.google.guava:guava:18.0",
-    sha1 = "cce0823396aa693798f8882e64213b1772032b09",
-    sha1_src = "ad97fe8faaf01a3d3faacecd58e8fa6e78a973ca",
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+
+RULES_JVM_EXTERNAL_TAG = "2.8"
+RULES_JVM_EXTERNAL_SHA = "79c9850690d7614ecdb72d68394f994fef7534b292c4867ce5e7dec0aa7bdfad"
+
+http_archive(
+    name = "rules_jvm_external",
+    strip_prefix = "rules_jvm_external-%s" % RULES_JVM_EXTERNAL_TAG,
+    sha256 = RULES_JVM_EXTERNAL_SHA,
+    url = "https://github.com/bazelbuild/rules_jvm_external/archive/%s.zip" % RULES_JVM_EXTERNAL_TAG,
+)
+
+load("@rules_jvm_external//:defs.bzl", "maven_install")
+
+maven_install(
+    artifacts = [
+        "com.google.guava:guava:18.0",
+    ],
+    repositories = [
+        "https://jcenter.bintray.com/",
+        "https://repo1.maven.org/maven2",
+    ],
+    fetch_sources = True,
 )

src/test/examples/bazel-project/hello/BUILD

@@ -4,6 +4,6 @@ java_binary(
     main_class = "Hello",
     visibility = ["//visibility:public"],
     deps = [
-        "@com_google_guava_guava//jar",
+        "@maven//:com_google_guava_guava",
     ],
 )

src/test/java/org/javacs/InferBazelConfigTest.java

@@ -10,13 +10,13 @@ public class InferBazelConfigTest {
     @Test
     public void bazelClassPath() {
         var bazel = new InferConfig(Paths.get("src/test/examples/bazel-project"));
-        assertThat(bazel.classPath(), contains(hasToString(endsWith("guava-18.0-ijar.jar"))));
+        assertThat(bazel.classPath(), contains(hasToString(endsWith("guava-18.0.jar"))));
     }
 
     @Test
     public void bazelClassPathInSubdir() {
         var bazel = new InferConfig(Paths.get("src/test/examples/bazel-project/hello"));
-        assertThat(bazel.classPath(), contains(hasToString(endsWith("guava-18.0-ijar.jar"))));
+        assertThat(bazel.classPath(), contains(hasToString(endsWith("guava-18.0.jar"))));
     }
 
     @Test