fix: verify gs filesystem is available

google-cloud-nio/pom.xml

@@ -176,17 +176,6 @@
           </execution>
         </executions>
       </plugin>
-      <plugin>
-        <groupId>org.apache.maven.plugins</groupId>
-        <artifactId>maven-dependency-plugin</artifactId>
-        <configuration>
-          <ignoredUnusedDeclaredDependencies>
-            <ignoredUnusedDeclaredDependency>com.google.auto.value:auto-value</ignoredUnusedDeclaredDependency>
-            <ignoredUnusedDeclaredDependency>com.google.auto.service:auto-service</ignoredUnusedDeclaredDependency>
-          </ignoredUnusedDeclaredDependencies>
-        </configuration>
-      </plugin>
-
     </plugins>
   </build>
 </project>

google-cloud-nio/src/main/resources/META-INF/services/java.nio.file.spi.FileSystemProvider

@@ -0,0 +1,16 @@
+# Copyright 2021 Google LLC
+#
+# Licensed 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.
+#
+
+com.google.cloud.storage.contrib.nio.CloudStorageFileSystemProvider

google-cloud-nio/src/test/java/com/google/cloud/storage/contrib/nio/CloudStorageOptionsTest.java

@@ -27,6 +27,8 @@
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.nio.file.spi.FileSystemProvider;
+import java.util.List;
 import org.junit.Before;
 import org.junit.Test;
 import org.junit.runner.RunWith;

pom.xml

@@ -99,7 +99,6 @@
         <artifactId>auto-value-annotations</artifactId>
         <version>${auto-value-annotation.version}</version>
       </dependency>
-
       <dependency>
         <groupId>junit</groupId>
         <artifactId>junit</artifactId>