maven fix for running license verification tests

Original commit: elastic/x-pack-elasticsearch@650adfadc8

pom.xml

@@ -108,6 +108,8 @@
                 <artifactId>maven-surefire-plugin</artifactId>
                 <version>2.16</version>
                 <configuration>
+                    <forkCount>1</forkCount>
+                    <reuseForks>false</reuseForks>
                     <includes>
                         <include>**/*Tests.java</include>
                     </includes>

src/test/java/org/elasticsearch/license/licensor/LicenseVerificationToolTests.java

@@ -21,7 +21,6 @@ import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
 
-@Ignore("Enable once maven is setup properly; now it throws invalid signature error for all the tests when the tests always pass in intellij")
 public class LicenseVerificationToolTests {
 
     private static String pubKeyPath = null;

src/test/java/org/elasticsearch/license/manager/LicenseVerificationTests.java

@@ -27,7 +27,6 @@ import static org.elasticsearch.license.core.ESLicenses.FeatureType;
 import static org.elasticsearch.license.core.LicenseUtils.readLicensesFromString;
 import static org.junit.Assert.*;
 
-@Ignore("Enable once maven is setup properly; now it throws invalid signature error for all the tests when the tests always pass in intellij")
 public class LicenseVerificationTests {
 
     private static String pubKeyPath = null;