Add the tests of SWSS_LOG_WARN for CRM threshold by syslog checking.#848

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iris00522 wants to merge 2 commits intosonic-net:masterfrom

iris00522:crm_syslog

Commits on Apr 19, 2019

Add the tests of SWSS_LOG_WARN for CRM threshold by syslog checking.
iris00522
committed

Commits on Apr 23, 2019

modify output strimg cmd from dvs.runcmd_output to dvs.runcmd.
iris00522
committed