Add missing sudo call to `service postgresql start`
Add missing sudo call to `service postgresql start`

Change-Id: Ie3859ad1308b7cd1d483d043b9f71d9f95abdf75
Reviewed-on: http://gerrit.cloudera.org:8080/12724
Reviewed-by: Joe McDonnell <2f04924382c6a21f96a9a4f8cbedc35ff4599584@cloudera.com>
Tested-by: Impala Public Jenkins <039b6b20426ff68ebe492b3021890d8c8fd010c9@cloudera.com>
Reviewed-on: https://gerrit.sjc.cloudera.com/c/cdh/impala/+/49237
Tested-by: Jenkins User <d95b56ce41a2e1ac4cecdd398defd7414407cc08@cloudera.com>
Reviewed-by: Laszlo Gaal <57b770caf3b7d570ebf40813dac2ce5f53722fa7@cloudera.com>
Tested-by: Laszlo Gaal <57b770caf3b7d570ebf40813dac2ce5f53722fa7@cloudera.com>
CDH-Build: Laszlo Gaal <57b770caf3b7d570ebf40813dac2ce5f53722fa7@cloudera.com>
Quasar-L0: Laszlo Gaal <57b770caf3b7d570ebf40813dac2ce5f53722fa7@cloudera.com>

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