Return ref to this in SimpleSslContextBuilder (#322)

* Return ref to this in SimpleSslContextBuilder

* make netty-shaded api dependency

Author: vitarb

temporal-serviceclient/build.gradle

@@ -83,8 +83,7 @@ dependencies {
     api group: 'com.google.protobuf', name: 'protobuf-java-util', version: '3.14.0'
     api group: 'com.uber.m3', name: 'tally-core', version: '0.6.1'
     api group: 'org.slf4j', name: 'slf4j-api', version: '1.7.30'
-
-    implementation 'io.grpc:grpc-netty-shaded:1.35.0'
+    api 'io.grpc:grpc-netty-shaded:1.35.0'
     if (!JavaVersion.current().isJava8()) {
         implementation 'javax.annotation:javax.annotation-api:1.3.2'
     }

temporal-serviceclient/src/main/java/io/temporal/serviceclient/SimpleSslContextBuilder.java

@@ -94,23 +94,31 @@ public SslContext build() throws SSLException {
   /**
    * @param trustManager - custom trust manager that should be used with the SSLContext for
    *     verifying server CA authority.
+   * @return builder instance.
    */
-  public void setTrustManager(TrustManager trustManager) {
+  public SimpleSslContextBuilder setTrustManager(TrustManager trustManager) {
     this.trustManager = trustManager;
+    return this;
   }
 
   /**
    * @param useInsecureTrustManager - if set to true then insecure trust manager is going to be used
    *     instead of the system default one. Note that this makes client vulnerable to man in the
    *     middle attack. Use with caution.
+   * @return builder instance.
    */
-  public void setUseInsecureTrustManager(boolean useInsecureTrustManager) {
+  public SimpleSslContextBuilder setUseInsecureTrustManager(boolean useInsecureTrustManager) {
     this.useInsecureTrustManager = useInsecureTrustManager;
+    return this;
   }
 
-  /** @param keyPassword - the password of the key, or null if it's not password-protected. */
-  public void setKeyPassword(String keyPassword) {
+  /**
+   * @param keyPassword - the password of the key, or null if it's not password-protected.
+   * @return builder instance.
+   */
+  public SimpleSslContextBuilder setKeyPassword(String keyPassword) {
     this.keyPassword = keyPassword;
+    return this;
   }
 
   /**