include jre in e4.17-based distro builds

eclipse-distribution/org.springframework.boot.ide.product.e417/org.springframework.boot.ide.product

@@ -113,7 +113,9 @@
       <feature id="org.springframework.tooling.cloudfoundry.manifest.ls.feature" installMode="root"/>
       <feature id="org.springframework.tooling.bosh.ls.feature" installMode="root"/>
       <feature id="org.springframework.tooling.concourse.ls.feature" installMode="root"/>
-   </features>
+
+      <feature id="org.eclipse.justj.openjdk.hotspot.jre.full" installMode="root"/>
+</features>
 
    <configurations>
    	  <property name="eclipse.buildId" value="${unqualifiedVersion}.${buildQualifier}"/>

eclipse-distribution/org.springframework.boot.ide.product.e417/pom.xml

@@ -51,16 +51,16 @@
 					<publishArtifacts>true</publishArtifacts>
 				</configuration>
 			</plugin>
-
+<!--
 			<plugin>
 				<groupId>org.eclipse.tycho</groupId>
 				<artifactId>target-platform-configuration</artifactId>
 				<version>${tycho-version}</version>
-<!--				<configuration>
-					<executionEnvironment>JavaSE-9</executionEnvironment>
-				</configuration> -->
+				<configuration>
+					<executionEnvironment>none</executionEnvironment>
+				</configuration>
 			</plugin>
-
+-->
 			<plugin>
 				<groupId>org.eclipse.tycho</groupId>
 				<artifactId>tycho-p2-director-plugin</artifactId>
@@ -475,5 +475,21 @@
 
 		</plugins>
 
+		<pluginManagement>
+			<plugins>
+				<plugin>
+					<groupId>org.eclipse.tycho</groupId>
+					<artifactId>target-platform-configuration</artifactId>
+					<version>${tycho-version}</version>
+					<configuration>
+						<dependency-resolution>
+							<profileProperties>
+								<org.eclipse.justj.buildtime>true</org.eclipse.justj.buildtime>
+							</profileProperties>
+						</dependency-resolution>
+					</configuration>
+				</plugin>
+			</plugins>
+		</pluginManagement>
 	</build>
 </project>

eclipse-distribution/pom.xml

@@ -472,6 +472,11 @@
 			<layout>p2</layout>
 			<url>https://download.jboss.org/jbosstools/updates/m2e-extensions/m2e-apt/1.5.2-2018-12-24_15-46-05-H18/</url>
 		</repository>
+		<repository>
+			<id>justj</id>
+			<url>https://download.eclipse.org/justj/jres/14/updates/release/latest/</url>
+			<layout>p2</layout>
+		</repository>
 	</repositories>
 
 	<pluginRepositories>