[CI] Use a loopback pinentry for signing

Author: eyalkoren

pom.xml

@@ -99,13 +99,18 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-gpg-plugin</artifactId>
-                        <version>1.6</version>
                         <executions>
                             <execution>
                                 <phase>verify</phase>
                                 <goals>
                                     <goal>sign</goal>
                                 </goals>
+                                <configuration>
+                                    <gpgArguments>
+                                        <arg>--pinentry-mode</arg>
+                                        <arg>loopback</arg>
+                                    </gpgArguments>
+                                </configuration>
                             </execution>
                         </executions>
                     </plugin>