spark git commit: [SPARK-19750][UI][BRANCH-2.1] Fix redirect issue from http to https

Repository: spark Updated Branches: refs/heads/branch-2.0 e30fe1c6a -> 491b47a16 [SPARK-19750][UI][BRANCH-2.1] Fix redirect issue from http to https ## What changes were proposed in this pull request? If spark ui port (4040) is not set, it will choose port number 0, this will make https port

spark git commit: [SPARK-19750][UI][BRANCH-2.1] Fix redirect issue from http to https

Repository: spark Updated Branches: refs/heads/branch-2.1 27347b5f2 -> 3a7591ad5 [SPARK-19750][UI][BRANCH-2.1] Fix redirect issue from http to https ## What changes were proposed in this pull request? If spark ui port (4040) is not set, it will choose port number 0, this will make https port