IMPALA-11454: part-2: create kudu binaries symlinks to reduce package size.
IMPALA-11454: part-2: create kudu binaries symlinks to reduce package size.

The standard apache kudu binaries (kudu-master and kudu-tserver) only
exists in /sbin, however the toolchain packaging script will also copy
them to /bin, leading to larger package size.

This patch create symlinks for kudu-master and kudu-tserver under /bin,
to reduce package size and keep forward compatbility.

Testing:
- build kudu package, then check the output of '/bin/kudu-master --version'
  and '/bin/kudu-tserver --version'.

Change-Id: Ibc1904be06f84acebf056a079dc1b6694032de87
Reviewed-on: http://gerrit.cloudera.org:8080/18880
Reviewed-by: Quanlong Huang <57dc73d1ec7f4282ded0758102b285e4591ad9a7@gmail.com>
Reviewed-by: Wenzhe Zhou <3ada41c58894eac1170bc4618db29adf13423690@cloudera.com>
Reviewed-by: Joe McDonnell <2f04924382c6a21f96a9a4f8cbedc35ff4599584@cloudera.com>
Tested-by: Joe McDonnell <2f04924382c6a21f96a9a4f8cbedc35ff4599584@cloudera.com>

cloudera/native-toolchain,cloudera/native-toolchain,cloudera/native-toolchain