Added httpfs/httpfs, HTTP/httpfs and testuser/httpfs principals for HttpFS. (#4) (#5)

diff --git a/init.sh b/init.sh
index a68d332..e1f1734 100644
--- a/init.sh
+++ b/init.sh
@@ -36,6 +36,11 @@
 kadmin.local -q "addprinc -randkey HTTP/s3g@EXAMPLE.COM"
 kadmin.local -q "addprinc -randkey testuser/s3g@EXAMPLE.COM"
 
+#for HttpFS
+kadmin.local -q "addprinc -randkey httpfs/httpfs@EXAMPLE.COM"
+kadmin.local -q "addprinc -randkey HTTP/httpfs@EXAMPLE.COM"
+kadmin.local -q "addprinc -randkey testuser/httpfs@EXAMPLE.COM"
+
 kadmin.local -q "addprinc -randkey om/om@EXAMPLE.COM"
 kadmin.local -q "addprinc -randkey HTTP/om@EXAMPLE.COM"
 kadmin.local -q "addprinc -randkey testuser/om@EXAMPLE.COM"