Fix Maven plugins tests on Windows

This commit fixes problems with file path separators and command
line argument quoting in Maven plug integration tests when run on
Windows.

Fixes gh-20244

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/intTest/java/org/springframework/boot/maven/RunIntegrationTests.java

@@ -85,14 +85,14 @@ class RunIntegrationTests {
 	@TestTemplate
 	void whenCommandLineSpecifiesJvmArgumentsTheyAreAvailableToTheApplication(MavenBuild mavenBuild) {
 		mavenBuild.project("run-jvmargs-commandline").goals("spring-boot:run")
-				.systemProperty("spring-boot.run.jvmArguments", "\"-Dfoo=value1\" \"-Dbar=value2\"")
+				.systemProperty("spring-boot.run.jvmArguments", "-Dfoo=value-from-cmd")
 				.execute((project) -> assertThat(buildLog(project)).contains("I haz been run"));
 	}
 
 	@TestTemplate
 	void whenPomAndCommandLineSpecifyJvmArgumentsThenPomOverrides(MavenBuild mavenBuild) {
 		mavenBuild.project("run-jvmargs").goals("spring-boot:run")
-				.systemProperty("spring-boot.run.jvmArguments", "\"-Dfoo=value-from-cmd\"")
+				.systemProperty("spring-boot.run.jvmArguments", "-Dfoo=value-from-cmd")
 				.execute((project) -> assertThat(buildLog(project)).contains("I haz been run"));
 	}
 
@@ -117,7 +117,7 @@ class RunIntegrationTests {
 	@TestTemplate
 	void whenAWorkingDirectoryIsConfiguredTheApplicationIsRunFromThatDirectory(MavenBuild mavenBuild) {
 		mavenBuild.project("run-working-directory").goals("spring-boot:run").execute(
-				(project) -> assertThat(buildLog(project)).containsPattern("I haz been run from.*/src/main/java"));
+				(project) -> assertThat(buildLog(project)).containsPattern("I haz been run from.*src.main.java"));
 	}
 
 	@TestTemplate

spring-boot-project/spring-boot-tools/spring-boot-maven-plugin/src/intTest/projects/run-jvmargs-commandline/src/main/java/org/test/SampleApplication.java

@@ -20,13 +20,9 @@ public class SampleApplication {
 
 	public static void main(String[] args) {
 		String foo = System.getProperty("foo");
-		if (!"value1".equals(foo)) {
+		if (!"value-from-cmd".equals(foo)) {
 			throw new IllegalStateException("foo system property mismatch (got [" + foo + "]");
 		}
-		String bar = System.getProperty("bar");
-		if (!"value2".equals(bar)) {
-			throw new IllegalStateException("bar system property mismatch (got [" + bar + "]");
-		}
 		System.out.println("I haz been run");
 	}