validation - Providing el api & impl dependencies in restx-validation…

…, in order to make interpolation work in validation error messages (like @SiZe)

restx-validation/pom.xml

@@ -20,6 +20,7 @@
         <maven.compiler.target>1.7</maven.compiler.target>
         <maven.compiler.source>1.7</maven.compiler.source>
         <hibernate-validator.version>5.0.1.Final</hibernate-validator.version>
+        <el.api.version>2.2</el.api.version>
     </properties>
 
     <dependencies>
@@ -32,6 +33,22 @@
             <groupId>org.hibernate</groupId>
             <artifactId>hibernate-validator</artifactId>
             <version>${hibernate-validator.version}</version>
+            <!--
+            Using compile scope here, and not runtime, because we may need to use some
+             hibernate-validator specific annotations (like @Email)
+            -->
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>javax.el</groupId>
+            <artifactId>el-api</artifactId>
+            <version>${el.api.version}</version>
+        </dependency>
+        <dependency>
+          <groupId>org.glassfish.web</groupId>
+          <artifactId>el-impl</artifactId>
+          <version>${el.api.version}</version>
+          <scope>runtime</scope>
         </dependency>
     </dependencies>