feat: add test proxy to java-bigtable client (googleapis#1498)

* feat: add test proxy to java-bigtable client

* udpate

* update

* remove shading plugin

* make client version a variable

* add a read me

* rebase and update version

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

* nit

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

test-proxy/EnableAutoValue.txt

@@ -0,0 +1,2 @@
+This is a marker file to trigger auto-value injection into the annotation processor path
+https://github.com/googleapis/java-shared-config/blob/51c9f68ff1736761b21c921f078ab2c8675ff268/pom.xml#L758

test-proxy/README.md

@@ -0,0 +1,46 @@
+# CBT Java Test Proxy
+
+The CBT test proxy is intended for running confromance tests for Cloug Bigtable Java Client.
+
+## Set up 
+
+If you have not already done so, [install golang](https://go.dev/doc/install), then clone the go test library:
+
+```
+git clone https://github.com/googleapis/cloud-bigtable-clients-test.git
+```
+
+## Start test proxy
+
+Build the proxy with the latest version of the client
+
+```
+cd java-bigtable/test-proxy
+mvn clean install
+```
+
+Start the proxy on default port 9999
+
+```
+mvn exec:java -Dexec.mainClass=com.google.cloud.bigtable.testproxy.CbtTestProxyMain
+```
+
+Start the proxy on a different port
+
+```
+mvn exec:java -Dexec.mainClass=com.google.cloud.bigtable.testproxy.CbtTestProxyMain -Dport=1
+```
+
+Build and start the proxy with an older version of the client
+
+```
+mvn clean install -Dbigtable.client.version=<client_version> -Denforcer.skip
+mvn exec:java -Dexec.mainClass=com.google.cloud.bigtable.testproxy.CbtTestProxyMain
+```
+
+## Run the test cases
+
+```
+cd cloud-bigtable-clients-test/tests
+go test -v -proxy_addr=:9999
+```

test-proxy/pom.xml

@@ -0,0 +1,140 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+  <groupId>com.google.cloud</groupId>
+  <artifactId>google-cloud-bigtable-test-proxy</artifactId>
+  <version>0.0.1-SNAPSHOT</version>
+  <packaging>jar</packaging>
+  <name>Google Cloud Bigtable Test Proxy</name>
+  <url>https://github.com/googleapis/java-bigtable</url>
+  <description>Cloud Bigtable Java Client test proxy for running conformance tests.</description>
+
+  <parent>
+    <artifactId>google-cloud-bigtable-parent</artifactId>
+    <groupId>com.google.cloud</groupId>
+    <version>2.16.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-bigtable:current} -->
+  </parent>
+
+  <properties>
+    <bigtable.client.version>2.16.1-SNAPSHOT</bigtable.client.version><!-- {x-version-update:google-cloud-bigtable:current} -->
+  </properties>
+
+  <dependencyManagement>
+    <dependencies>
+      <dependency>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>google-cloud-bigtable-bom</artifactId>
+        <version>${bigtable.client.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+      <dependency>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>google-cloud-bigtable-deps-bom</artifactId>
+        <version>${bigtable.client.version}</version>
+        <type>pom</type>
+        <scope>import</scope>
+      </dependency>
+    </dependencies>
+  </dependencyManagement>
+
+  <dependencies>
+    <dependency>
+      <groupId>com.google.cloud</groupId>
+      <artifactId>google-cloud-bigtable</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>io.grpc</groupId>
+      <artifactId>grpc-netty</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>io.grpc</groupId>
+      <artifactId>grpc-stub</artifactId>
+    </dependency>
+    <dependency>
+      <groupId>com.google.protobuf</groupId>
+      <artifactId>protobuf-java</artifactId>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <extensions>
+      <extension>
+        <groupId>kr.motd.maven</groupId>
+        <artifactId>os-maven-plugin</artifactId>
+        <version>1.6.2</version>
+      </extension>
+    </extensions>
+    <plugins>
+      <plugin>
+        <groupId>org.xolstice.maven.plugins</groupId>
+        <artifactId>protobuf-maven-plugin</artifactId>
+        <version>0.6.1</version>
+        <configuration>
+          <protocArtifact>com.google.protobuf:protoc:3.9.0:exe:${os.detected.classifier}</protocArtifact>
+          <pluginId>grpc-java</pluginId>
+          <pluginArtifact>io.grpc:protoc-gen-grpc-java:1.24.0:exe:${os.detected.classifier}</pluginArtifact>
+        </configuration>
+        <executions>
+          <execution>
+            <goals>
+              <goal>compile</goal>
+              <goal>compile-custom</goal>
+            </goals>
+          </execution>
+        </executions>
+      </plugin>
+      <!-- start skip publishing to maven central -->
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-deploy-plugin</artifactId>
+        <configuration>
+          <skip>true</skip>
+        </configuration>
+      </plugin>
+        <plugin>
+          <groupId>org.sonatype.plugins</groupId>
+          <artifactId>nexus-staging-maven-plugin</artifactId>
+          <configuration>
+            <skipNexusStagingDeployMojo>true</skipNexusStagingDeployMojo>
+          </configuration>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-site-plugin</artifactId>
+          <configuration>
+            <skipDeploy>true</skipDeploy>
+          </configuration>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-source-plugin</artifactId>
+          <configuration>
+            <skipSource>true</skipSource>
+          </configuration>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-javadoc-plugin</artifactId>
+          <configuration>
+            <skip>true</skip>
+          </configuration>
+        </plugin>
+        <plugin>
+          <groupId>org.apache.maven.plugins</groupId>
+          <artifactId>maven-gpg-plugin</artifactId>
+          <configuration>
+            <skip>true</skip>
+          </configuration>
+        </plugin>
+        <plugin>
+          <groupId>org.codehaus.mojo</groupId>
+          <artifactId>clirr-maven-plugin</artifactId>
+          <configuration>
+            <skip>true</skip>
+          </configuration>
+        </plugin>
+        <!-- end skip publishing to maven central -->
+    </plugins>
+  </build>
+</project>