use maven instead of vicci for offline karaf

- pom.xml to create offline karaf tarballs
- download offline karaf tarball from maven to benefit from CDN
   buck's MavenUrlDecoder currently has issue handling non-jar type
   in maven coordinate

Change-Id: Id25e286ec87426814002ed6d8cca6e66a4b80110
diff --git a/lib/BUCK b/lib/BUCK
index 4d53ed0..d36cfe7 100644
--- a/lib/BUCK
+++ b/lib/BUCK
@@ -1,4 +1,4 @@
-# ***** This file was auto-generated at Mon, 18 Dec 2017 23:41:30 GMT. Do not edit this file manually. *****
+# ***** This file was auto-generated at Tue, 19 Dec 2017 23:17:29 GMT. Do not edit this file manually. *****
 # ***** Use onos-lib-gen *****
 
 pass_thru_pom(
@@ -1143,9 +1143,9 @@
 
 remote_file (
   name = 'apache-karaf',
-  out = 'apache-karaf-3.0.8-offline-20170825.tar.gz',
-  url = 'http://onlab.vicci.org/onos/third-party/apache-karaf-3.0.8-offline-20170825.tar.gz',
-  sha1 = '4d9b5c69aba48854744aa4aee5431930c1271c59',
+  out = 'apache-karaf-offline-3.0.8.tar.gz',
+  url = 'https://repo1.maven.org/maven2/org/onosproject/apache-karaf-offline/3.0.8/apache-karaf-offline-3.0.8.tar.gz',
+  sha1 = '2503c5853285e3414da15aef8d8f3f629747c927',
   visibility = [ 'PUBLIC' ],
 )