travis: set known hosts using travis config

.travis.yml

@@ -1,6 +1,9 @@
 language: java
 sudo: false
 
+addons:
+  ssh_known_hosts: updates.jmonkeyengine.org
+
 before_cache:
   - rm -f $HOME/.gradle/caches/modules-2/modules-2.lock
  

build.gradle

@@ -1,5 +1,3 @@
-import org.gradle.api.artifacts.*
-
 buildscript {
     repositories {
         jcenter()
@@ -12,7 +10,6 @@ buildscript {
 
 apply plugin: 'base'
 apply from: file('version.gradle')
-apply from: file('upload.gradle')
 
 // This is applied to all sub projects
 subprojects {

private/known_hosts

@@ -1 +0,0 @@
-updates.jmonkeyengine.org ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAuUaUztifV0v33iMJovEil0RPwx34RvpBXVPgfKJ/nwSvQzxo1VE9SZWzpgmX8QTvGBcRnxtm63iiHhlJe1Cid0m9SH3JSvBiR0CqHs+xRaEzjOM8/3Kp7DBZB3yuf/p3oecyCb48epbvQG7R5LhaW6JPyDkYMYebkpZuulf8d4qlbMCQlU2olWdbIO39BF8pxlcBei3n1C7jXpIgh6LFhCzNDH/kwYP3XLzuVgccy14gpiUfdeQ2JR0U/7yR1VJgTkVTBXiPUsdHfjXdIiShLq8OdtFlltZXe6nrUpFMvsi/hKcIhaZqhRz/5oAx0BPsercSHQQaKaRTqchAfd8ZeQ==

upload.gradle

@@ -1,6 +0,0 @@
-task copySshKnownHosts(type: Copy) {
-    from 'private/known_hosts'
-    into System.properties['user.home'] + '/.ssh'
-}
-
-uploadArchives.dependsOn copySshKnownHosts