Update tycho to 2.0.0

Signed-off-by: Ondrej Dockal <odockal@redhat.com>

pom.xml

@@ -20,14 +20,14 @@
 	<packaging>pom</packaging>
 
 	<properties>
-		<tycho-version>1.7.0</tycho-version>
+		<tycho-version>2.0.0</tycho-version>
 		<tychoExtrasVersion>${tycho-version}</tychoExtrasVersion>
 		<eclipse-target-site>https://download.eclipse.org/staging/2020-09/</eclipse-target-site>
 		<swtbot-update-site>https://download.eclipse.org/technology/swtbot/snapshots/</swtbot-update-site>
 		<eclipse-orbit-update-site>https://download.eclipse.org/tools/orbit/downloads/drops/S20200817205214/repository</eclipse-orbit-update-site>
 		<cbi-repo-site>https://repo.eclipse.org/content/repositories/cbi-releases/</cbi-repo-site>
 		<download-plugin-version>1.2.1</download-plugin-version>
-		<java.target.version>1.8</java.target.version>
+		<java.target.version>11</java.target.version>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<!-- In the update site's site/pom.xml (that calls jbosstools-maven-plugins/tycho-plugins/repository-utils) 
 			you can override this value to be Nightly Build, Development Milestone, or