GH-2178 - Re-enable documentation deployment.

The upgrade to Artifactory Maven Plugin 3.6 has caused our documentation deployments being broken as the new version now considers the maven.deploy.skip property and thus builds the documentation artifacts but doesn't deploy them.

pom.xml

@@ -233,7 +233,6 @@
 				<maven.main.skip>true</maven.main.skip>
 				<maven.test.skip>true</maven.test.skip>
 				<maven.install.skip>true</maven.install.skip>
-				<maven.deploy.skip>true</maven.deploy.skip>
 			</properties>
 
 			<build>
@@ -353,6 +352,16 @@
 						</executions>
 					</plugin>
 
+					<!-- Skip default deployment -->
+
+					<plugin>
+						<groupId>org.apache.maven.plugins</groupId>
+						<artifactId>maven-deploy-plugin</artifactId>
+						<configuration>
+							<skip>true</skip>
+						</configuration>
+					</plugin>
+
 					<!-- Deploy to Artifactory -->
 
 					<plugin>