Added setters to LdapConfig to better support Spring @ConfigProps

[bvulaj]

Spring external configuration injection relies on ctors or setters. Essentially lets us do:

  @Bean
  @ConfigurationProperties(prefix = "ldap")
  public LdapConfiguration ldapConfiguration() {
    return new LdapConfiguration();
  }

Instead of:

 @Bean
  public LdapConfiguration ldapConfiguration(
      @Value("${ldapconfig.server}") String server,
      @Value("${ldapconfig.port}") Integer port,
      @Value("${ldapconfig.username}") String bindDn,
      @Value("${ldapconfig.password}") String bindDNPwd,
      @Value("${ldapconfig.pool_size}") Integer poolSize,
      @Value("${ldapconfig.use_tls}") Boolean useSSL,
      @Value("${ldapconfig.truststore}") String trustStore,
      @Value("${ldapconfig.truststore_password}") String trustStorePassword,
      @Value("${ldapconfig.connectionTimeoutMS}") Integer connectionTimeoutMS,
      @Value("${ldapconfig.responseTimeoutMS}") Integer responseTimeoutMS,
      @Value("${ldapconfig.debug}") Boolean debug,
      @Value("${ldapconfig.keepAlive}") Boolean keepAlive,
      @Value("${ldapconfig.poolMaxConnectionAgeMS}") Integer poolMaxConnectionAgeMS) {

    LdapConfiguration config = new LdapConfiguration();
    config.server(server);
    config.port(port);
    config.bindDn(bindDn);
    config.bindDNPwd(bindDNPwd);
    config.poolSize(poolSize);
    config.useSSL(useSSL);
    config.trustStore(trustStore);
    config.trustStorePassword(trustStorePassword);
    config.connectionTimeoutMS(connectionTimeoutMS);
    config.responseTimeoutMS(responseTimeoutMS);
    config.debug(debug);
    config.keepAlive(keepAlive);
    config.poolMaxConnectionAgeMS(poolMaxConnectionAgeMS);

    return config;

[coveralls]

Coverage remained the same at ?% when pulling 1a77388 on ldap-config-setters into 4235aa6 on master.