Run ROCKSDB_LITE tests in travis

Summary:
Update travis to run ROCKSDB_LITE tests

Right now we run ROCKSDB_LITE tests in Jenkins
https://ci-builds.fb.com/view/rocksdb/job/rocksdb_lite_build/

Test Plan: I am not sure if there is anyway to test this except by landing it and checking the travis output

Reviewers: igor, yhchiang, sdong

Reviewed By: sdong

Subscribers: dhruba

Differential Revision: https://reviews.facebook.net/D48813

.travis.yml

@@ -34,7 +34,7 @@ before_script:
 # as EnvPosixTest::AllocateTest expects within the Travis OpenVZ environment.
 script:
   - if [[ "${TRAVIS_OS_NAME}" == 'linux' ]]; then OPT=-DTRAVIS CLANG_FORMAT_DIFF=/tmp/clang-format-diff.py make format || true; fi
-  - OPT=-DTRAVIS V=1 make -j4 check && OPT=-DTRAVIS V=1 make clean jclean rocksdbjava jtest
+  - OPT=-DTRAVIS V=1 make -j4 check && OPT=-DTRAVIS V=1 make clean jclean rocksdbjava jtest && make clean && OPT="-DTRAVIS -DROCKSDB_LITE" V=1 make -j4 check
 
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