Use HikariCP is jdbc and jpa starters

This commit is a companion of what was done in #6013. As HikariCP is
now the default connection pool, the jdbc and jpa starters no longer
provide `tomcat-jdbc`, but rather `HikariCP`.

Closes gh-9392

spring-boot-devtools/pom.xml

@@ -112,6 +112,11 @@
 			<artifactId>h2</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>com.zaxxer</groupId>
+			<artifactId>HikariCP</artifactId>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>
 			<artifactId>spring-webmvc</artifactId>
@@ -183,10 +188,5 @@
 			<artifactId>thymeleaf-layout-dialect</artifactId>
 			<scope>test</scope>
 		</dependency>
-		<dependency>
-			<groupId>org.apache.tomcat</groupId>
-			<artifactId>tomcat-jdbc</artifactId>
-			<scope>test</scope>
-		</dependency>
 	</dependencies>
 </project>

spring-boot-devtools/src/test/java/org/springframework/boot/devtools/autoconfigure/DevToolsEmbeddedDataSourceAutoConfigurationTests.java

@@ -38,7 +38,7 @@ import static org.mockito.Mockito.verify;
  * @author Andy Wilkinson
  */
 @RunWith(ModifiedClassPathRunner.class)
-@ClassPathExclusions("tomcat-jdbc-*.jar")
+@ClassPathExclusions("HikariCP-*.jar")
 public class DevToolsEmbeddedDataSourceAutoConfigurationTests
 		extends AbstractDevToolsDataSourceAutoConfigurationTests {
 

spring-boot-docs/src/main/asciidoc/spring-boot-features.adoc

@@ -2829,7 +2829,7 @@ Here's the algorithm for choosing a specific implementation:
   DBCP2 is available we will use it.
 
 If you use the `spring-boot-starter-jdbc` or `spring-boot-starter-data-jpa`
-'`starters`' you will automatically get a dependency to `tomcat-jdbc`.
+'`starters`' you will automatically get a dependency to `HikariCP`.
 
 NOTE: You can bypass that algorithm completely and specify the connection pool to use via
 the `spring.datasource.type` property. This is especially important if you are running

spring-boot-starters/spring-boot-starter-jdbc/pom.xml

@@ -23,8 +23,8 @@
 			<artifactId>spring-boot-starter</artifactId>
 		</dependency>
 		<dependency>
-			<groupId>org.apache.tomcat</groupId>
-			<artifactId>tomcat-jdbc</artifactId>
+			<groupId>com.zaxxer</groupId>
+			<artifactId>HikariCP</artifactId>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework</groupId>

spring-boot-starters/spring-boot-starter-jdbc/src/main/resources/META-INF/spring.provides

-provides: spring-jdbc,spring-tx,tomcat-jdbc
\ No newline at end of file
+provides: spring-jdbc,spring-tx,HikariCP
\ No newline at end of file