Add clearCheckSums to Liquibase auto configuration

Liquibase auto configuration is extended with clearCheckSums to allow
to clear all checksums in the current changelog, so they will be
recalculated upon the next update.

See gh-20417

Author: ferengra

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/liquibase/LiquibaseAutoConfiguration.java

@@ -64,6 +64,7 @@
  * @author Dominic Gunn
  * @author Dan Zheng
  * @author András Deák
+ * @author Ferenc Gratzer
  * @since 1.1.0
  */
 @Configuration(proxyBeanMethods = false)
@@ -107,6 +108,7 @@ public SpringLiquibase liquibase(DataSourceProperties dataSourceProperties,
 			liquibase.setDatabaseChangeLogTable(this.properties.getDatabaseChangeLogTable());
 			liquibase.setDatabaseChangeLogLockTable(this.properties.getDatabaseChangeLogLockTable());
 			liquibase.setDropFirst(this.properties.isDropFirst());
+			liquibase.setClearCheckSums(this.properties.isClearCheckSums());
 			liquibase.setShouldRun(this.properties.isEnabled());
 			liquibase.setLabels(this.properties.getLabels());
 			liquibase.setChangeLogParameters(this.properties.getParameters());

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/liquibase/LiquibaseProperties.java

@@ -29,6 +29,7 @@
  *
  * @author Marcel Overdijk
  * @author Eddú Meléndez
+ * @author Ferenc Gratzer
  * @since 1.1.0
  */
 @ConfigurationProperties(prefix = "spring.liquibase", ignoreUnknownFields = false)
@@ -74,6 +75,12 @@ public class LiquibaseProperties {
 	 */
 	private boolean dropFirst;
 
+	/**
+	 * Whether to clear all checksums in the current changelog, so they will be
+	 * recalculated next update.
+	 */
+	private boolean clearCheckSums;
+
 	/**
 	 * Whether to enable Liquibase support.
 	 */
@@ -187,6 +194,14 @@ public void setDropFirst(boolean dropFirst) {
 		this.dropFirst = dropFirst;
 	}
 
+	public boolean isClearCheckSums() {
+		return this.clearCheckSums;
+	}
+
+	public void setClearCheckSums(boolean clearCheckSums) {
+		this.clearCheckSums = clearCheckSums;
+	}
+
 	public boolean isEnabled() {
 		return this.enabled;
 	}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/liquibase/LiquibaseAutoConfigurationTests.java

@@ -69,6 +69,7 @@
  * @author Dominic Gunn
  * @author András Deák
  * @author Andrii Hrytsiuk
+ * @author Ferenc Gratzer
  */
 @ExtendWith(OutputCaptureExtension.class)
 class LiquibaseAutoConfigurationTests {
@@ -106,6 +107,7 @@ void defaultSpringLiquibase() {
 					assertThat(liquibase.getContexts()).isNull();
 					assertThat(liquibase.getDefaultSchema()).isNull();
 					assertThat(liquibase.isDropFirst()).isFalse();
+					assertThat(liquibase.isClearCheckSums()).isFalse();
 				}));
 	}
 
@@ -143,6 +145,7 @@ void defaultValues() {
 					assertThat(liquibase.getDatabaseChangeLogLockTable())
 							.isEqualTo(properties.getDatabaseChangeLogLockTable());
 					assertThat(liquibase.isDropFirst()).isEqualTo(properties.isDropFirst());
+					assertThat(liquibase.isClearCheckSums()).isEqualTo(properties.isClearCheckSums());
 					assertThat(liquibase.isTestRollbackOnUpdate()).isEqualTo(properties.isTestRollbackOnUpdate());
 				}));
 	}
@@ -189,6 +192,13 @@ void overrideDropFirst() {
 				.run(assertLiquibase((liquibase) -> assertThat(liquibase.isDropFirst()).isTrue()));
 	}
 
+	@Test
+	void overrideClearCheckSums() {
+		this.contextRunner.withUserConfiguration(EmbeddedDataSourceConfiguration.class)
+				.withPropertyValues("spring.liquibase.clear-check-sums:true")
+				.run(assertLiquibase((liquibase) -> assertThat(liquibase.isClearCheckSums()).isTrue()));
+	}
+
 	@Test
 	void overrideDataSource() {
 		this.contextRunner.withUserConfiguration(EmbeddedDataSourceConfiguration.class)