title: @Document doesn't create a collection in spring boot application
body: <p>I have a simple spring boot rest application. Trying to create a collection using @Document annotation in spring data mongo db. I know spring framework creates a collection if the document is denoted with @Document annotation.</p>
  <h1>Entity</h1>
  <pre><code>@Document(&quot;User&quot;)
  public class User {
      @Id
      private String Id;
      @Field(&quot;firstName&quot;)
      @TextIndexed
      private String firstName;
      @Field(&quot;lastName&quot;)
      @TextIndexed
      private String lastName;
      private String address;
  
      public String getId() {
          return Id;
      }
  
      public void setId(String id) {
          Id = id;
      }
  
      public String getFirstName() {
          return firstName;
      }
  
      public void setFirstName(String firstName) {
          this.firstName = firstName;
      }
  
      public String getLastName() {
          return lastName;
      }
  
      public void setLastName(String lastName) {
          this.lastName = lastName;
      }
  
      public String getAddress() {
          return address;
      }
  
      public void setAddress(String address) {
          this.address = address;
      }
  }
  </code></pre>
  <h1>properties</h1>
  <pre><code>spring.data.mongodb.uri=mongodb://localhost:27017/Order
  </code></pre>
  <p>However, in the rest controller, it creates a collection on insert command, but still, it doesn't create a Text-index on insert.</p>
  <pre><code>@RestController
  public class Controller {
      private MongoTemplate mongoTemplate;
  
      public Controller(MongoTemplate mongoTemplate) {
          this.mongoTemplate = mongoTemplate;
      }
  
      @GetMapping(&quot;/get&quot;)
      public String Get(){
          mongoTemplate.insert(new User());
          return &quot;HelloWorld&quot;;
      }
  }
  </code></pre>
  <p>Don't have any error in the console as well</p>
  <h1>Console</h1>
  <pre><code>2020-09-03 12:52:00.657  INFO 865 --- [           main] com.example.demo.DemoApplication         : Starting DemoApplication on macbooks-MacBook-Air.local with PID 865 (/Users/macbook/Projects/Fete/demo/build/classes/java/main started by macbook in /Users/macbook/Projects/Fete/demo)
  2020-09-03 12:52:00.662  INFO 865 --- [           main] com.example.demo.DemoApplication         : No active profile set, falling back to default profiles: default
  2020-09-03 12:52:02.676  INFO 865 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data MongoDB repositories in DEFAULT mode.
  2020-09-03 12:52:02.712  INFO 865 --- [           main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 22ms. Found 0 MongoDB repository interfaces.
  2020-09-03 12:52:04.106  INFO 865 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat initialized with port(s): 8080 (http)
  2020-09-03 12:52:04.136  INFO 865 --- [           main] o.apache.catalina.core.StandardService   : Starting service [Tomcat]
  2020-09-03 12:52:04.137  INFO 865 --- [           main] org.apache.catalina.core.StandardEngine  : Starting Servlet engine: [Apache Tomcat/9.0.37]
  2020-09-03 12:52:04.269  INFO 865 --- [           main] o.a.c.c.C.[Tomcat].[localhost].[/]       : Initializing Spring embedded WebApplicationContext
  2020-09-03 12:52:04.270  INFO 865 --- [           main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 3500 ms
  2020-09-03 12:52:04.558  INFO 865 --- [           main] org.mongodb.driver.cluster               : Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms'}
  2020-09-03 12:52:04.692  INFO 865 --- [localhost:27017] org.mongodb.driver.connection            : Opened connection [connectionId{localValue:1, serverValue:9}] to localhost:27017
  2020-09-03 12:52:04.731  INFO 865 --- [localhost:27017] org.mongodb.driver.cluster               : Monitor thread successfully connected to server with description ServerDescription{address=localhost:27017, type=STANDALONE, state=CONNECTED, ok=true, minWireVersion=0, maxWireVersion=8, maxDocumentSize=16777216, logicalSessionTimeoutMinutes=30, roundTripTimeNanos=8577619}
  2020-09-03 12:52:06.165  INFO 865 --- [           main] o.s.s.concurrent.ThreadPoolTaskExecutor  : Initializing ExecutorService 'applicationTaskExecutor'
  2020-09-03 12:52:06.746  INFO 865 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8080 (http) with context path ''
  2020-09-03 12:52:06.764  INFO 865 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 6.69 seconds (JVM running for 13.238)
  </code></pre>
  <p>Code repository</p>
  <pre><code>https://github.com/anandjaisy/mongoDBSpringBoot
  </code></pre>