Temporarily disable travis on linux
Temporarily disable travis on linux

Summary: Travis is broken on linux, disable it temporarily

Test Plan: https://travis-ci.org/facebook/rocksdb/builds/137721712

Reviewers: yhchiang, kradhakrishnan, sdong

Reviewed By: sdong

Subscribers: andrewkr, dhruba

Differential Revision: https://reviews.facebook.net/D59673

jalexanderqed/rocksdb,OverlordQ/rocksdb,wenduo/rocksdb,wenduo/rocksdb,bbiao/rocksdb,wat-ze-hex/rocksdb,SunguckLee/RocksDB,facebook/rocksdb,Andymic/rocksdb,Andymic/rocksdb,ryneli/rocksdb,SunguckLee/RocksDB,vmx/rocksdb,facebook/rocksdb,norton/rocksdb,wenduo/rocksdb,bbiao/rocksdb,bbiao/rocksdb,tsheasha/rocksdb,Andymic/rocksdb,facebook/rocksdb,OverlordQ/rocksdb,SunguckLee/RocksDB,bbiao/rocksdb,SunguckLee/RocksDB,ryneli/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,facebook/rocksdb,ryneli/rocksdb,norton/rocksdb,jalexanderqed/rocksdb,ryneli/rocksdb,bbiao/rocksdb,Andymic/rocksdb,ryneli/rocksdb,jalexanderqed/rocksdb,facebook/rocksdb,wenduo/rocksdb,bbiao/rocksdb,OverlordQ/rocksdb,bbiao/rocksdb,vmx/rocksdb,hobinyoon/rocksdb,facebook/rocksdb,vmx/rocksdb,vmx/rocksdb,OverlordQ/rocksdb,vmx/rocksdb,tsheasha/rocksdb,ryneli/rocksdb,jalexanderqed/rocksdb,facebook/rocksdb,hobinyoon/rocksdb,SunguckLee/RocksDB,norton/rocksdb,vmx/rocksdb,SunguckLee/RocksDB,jalexanderqed/rocksdb,wat-ze-hex/rocksdb,hobinyoon/rocksdb,bbiao/rocksdb,jalexanderqed/rocksdb,norton/rocksdb,tsheasha/rocksdb,wat-ze-hex/rocksdb,Andymic/rocksdb,Andymic/rocksdb,norton/rocksdb,wat-ze-hex/rocksdb,wenduo/rocksdb,OverlordQ/rocksdb,tsheasha/rocksdb,wenduo/rocksdb,facebook/rocksdb,ryneli/rocksdb,vmx/rocksdb,jalexanderqed/rocksdb,OverlordQ/rocksdb,wat-ze-hex/rocksdb,SunguckLee/RocksDB,tsheasha/rocksdb,norton/rocksdb,wat-ze-hex/rocksdb,Andymic/rocksdb,norton/rocksdb,wat-ze-hex/rocksdb,hobinyoon/rocksdb,OverlordQ/rocksdb,wenduo/rocksdb,wenduo/rocksdb,norton/rocksdb,SunguckLee/RocksDB,hobinyoon/rocksdb,hobinyoon/rocksdb,Andymic/rocksdb,tsheasha/rocksdb,vmx/rocksdb,hobinyoon/rocksdb,tsheasha/rocksdb,wat-ze-hex/rocksdb