travis: reduce number of experiments for the --full run
travis: reduce number of experiments for the --full run

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Former-commit-id: 5c0c41c77586143203ee4f54ae785bde020de95c [formerly e63202f4131c69c4ab6aab9305f628b23eed4375] [formerly d336d144b0ed41f48facf9498164d72df230a62c [formerly fb486f7a44f6cb6a9d00cde8a133557c2ed90c7b]]
Former-commit-id: 2c6e0c4adae3c25adefe0e53a7770eada721fcaf [formerly 950dbf54b0d2b52b65c26380126d9532b0978442]
Former-commit-id: 128d089eb6a75789f32a55c8b8538982cc8a821a
PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild