Make trilead-api optional

Signed-off-by: Olivier Lamy <[email protected]>

Author: olamy

pom.xml

@@ -92,6 +92,7 @@
         <dependency>
             <groupId>org.jenkins-ci.plugins</groupId>
             <artifactId>trilead-api</artifactId>
+            <optional>true</optional>
         </dependency>
 
         <!-- jenkins dependencies -->