[crmorch]: neighbor used counter increased twice (#472) - Cherry-pick to 201803 branch#501

prsunny merged 1 commit intosonic-net:201803sonic-net/sonic-swss:201803from

MaxPolovyi:201803-cherry-pick-crm-neighMaxPolovyi/sonic-swss:201803-cherry-pick-crm-neighCopy head branch name to clipboard