Update the travis configurations to only build the "master" branch or any branches prefixed with "release" in order to reduce the duplicate use of build bots on travis for pull requests based on non-user-fork-originated branches.
Update the travis configurations to only build the "master" branch or any branches prefixed with "release" in order to reduce the duplicate use of build bots on travis for pull requests based on non-user-fork-originated branches.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=116275195

google/compile-testing