Use relaxed property resolver in KeyCondition

Allows users to define properties like encrypt.key-store.password=letmein

fixes spring-projectsgh-191

(cherry picked from commit 7744b63)

Author: spencergibb

spring-cloud-context/src/main/java/org/springframework/cloud/bootstrap/encrypt/EncryptionBootstrapConfiguration.java

@@ -21,6 +21,7 @@
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingClass;
 import org.springframework.boot.autoconfigure.condition.SpringBootCondition;
+import org.springframework.boot.bind.RelaxedPropertyResolver;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.cloud.bootstrap.encrypt.KeyProperties.KeyStore;
 import org.springframework.cloud.context.encrypt.EncryptorFactory;
@@ -109,21 +110,22 @@ public static class KeyCondition extends SpringBootCondition {
 		public ConditionOutcome getMatchOutcome(ConditionContext context,
 				AnnotatedTypeMetadata metadata) {
 			Environment environment = context.getEnvironment();
-			if (hasProperty(environment, "encrypt.keyStore.location")) {
-				if (hasProperty(environment, "encrypt.keyStore.password")) {
+			RelaxedPropertyResolver propertyResolver = new RelaxedPropertyResolver(environment);
+			if (hasProperty(propertyResolver, environment, "encrypt.keyStore.location")) {
+				if (hasProperty(propertyResolver, environment, "encrypt.keyStore.password")) {
 					return ConditionOutcome.match("Keystore found in Environment");
 				}
 				return ConditionOutcome
 						.noMatch("Keystore found but no password in Environment");
 			}
-			else if (hasProperty(environment, "encrypt.key")) {
+			else if (hasProperty(propertyResolver, environment, "encrypt.key")) {
 				return ConditionOutcome.match("Key found in Environment");
 			}
 			return ConditionOutcome.noMatch("Keystore nor key found in Environment");
 		}
 
-		private boolean hasProperty(Environment environment, String key) {
-			String value = environment.getProperty(key);
+		private boolean hasProperty(RelaxedPropertyResolver propertyResolver, Environment environment, String key) {
+			String value = propertyResolver.getProperty(key);
 			if (value == null) {
 				return false;
 			}

spring-cloud-context/src/test/java/org/springframework/cloud/bootstrap/encrypt/EncryptionBootstrapConfigurationTests.java

@@ -19,6 +19,20 @@ public void rsaKeyStore() {
 				.run();
 		TextEncryptor encryptor = context.getBean(TextEncryptor.class);
 		assertEquals("foo", encryptor.decrypt(encryptor.encrypt("foo")));
+		context.close();
+	}
+
+	@Test
+	public void rsaKeyStoreWithRelaxedProperties() {
+		ConfigurableApplicationContext context = new SpringApplicationBuilder(
+				EncryptionBootstrapConfiguration.class).web(false).properties(
+				"encrypt.key-store.location:classpath:/server.jks",
+				"encrypt.key-store.password:letmein",
+				"encrypt.key-store.alias:mytestkey", "encrypt.key-store.secret:changeme")
+				.run();
+		TextEncryptor encryptor = context.getBean(TextEncryptor.class);
+		assertEquals("foo", encryptor.decrypt(encryptor.encrypt("foo")));
+		context.close();
 	}
 
 }