Make gretty samples compatible with logback 1.2.9

Explicitly reference the logback.xml file to prevent gretty from configuring the defaults using groovy.

Issue gh-10642

samples/javaconfig/concurrency/spring-security-samples-javaconfig-concurrency.gradle

@@ -18,3 +18,7 @@ dependencies {
 	runtime 'ch.qos.logback:logback-classic'
 	runtime 'opensymphony:sitemesh'
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/form/spring-security-samples-javaconfig-form.gradle

@@ -38,3 +38,7 @@ dependencies {
 
 	integrationTestCompile seleniumDependencies
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/hellojs/spring-security-samples-javaconfig-hellojs.gradle

@@ -18,3 +18,7 @@ dependencies {
 
 	runtime 'opensymphony:sitemesh'
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/hellomvc/spring-security-samples-javaconfig-hellomvc.gradle

@@ -20,3 +20,7 @@ dependencies {
 
 	testCompile project(':spring-security-test')
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/helloworld/spring-security-samples-javaconfig-helloworld.gradle

@@ -27,3 +27,7 @@ dependencies {
 
 	integrationTestCompile seleniumDependencies
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/inmemory/spring-security-samples-javaconfig-inmemory.gradle

@@ -20,3 +20,7 @@ dependencies {
 
 	testCompile project(':spring-security-test')
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/jdbc/spring-security-samples-javaconfig-jdbc.gradle

@@ -39,3 +39,7 @@ dependencies {
 
 	integrationTestCompile seleniumDependencies
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/ldap/spring-security-samples-javaconfig-ldap.gradle

@@ -37,3 +37,7 @@ dependencies {
 
 	integrationTestCompile seleniumDependencies
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/messages/spring-security-samples-javaconfig-messages.gradle

@@ -29,3 +29,7 @@ dependencies {
 
 	providedCompile 'javax.servlet:javax.servlet-api'
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/openid/spring-security-samples-javaconfig-openid.gradle

@@ -20,3 +20,7 @@ dependencies {
 	runtime 'net.sourceforge.nekohtml:nekohtml'
 	runtime 'opensymphony:sitemesh'
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/preauth/spring-security-samples-javaconfig-preauth.gradle

@@ -17,3 +17,7 @@ dependencies {
 
 	runtime 'opensymphony:sitemesh'
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/rememberme/spring-security-samples-javaconfig-rememberme.gradle

@@ -17,3 +17,7 @@ dependencies {
 
 	runtime 'opensymphony:sitemesh'
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/saml2login/spring-security-samples-javaconfig-saml2-login.gradle

@@ -9,3 +9,7 @@ dependencies {
 
 	testCompile project(':spring-security-test')
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}

samples/javaconfig/x509/spring-security-samples-javaconfig-x509.gradle

@@ -17,3 +17,7 @@ dependencies {
 
 	runtime 'opensymphony:sitemesh'
 }
+
+gretty {
+	logbackConfigFile = "src/main/resources/logback.xml"
+}