Fix oom-score-adj on older distros. (#7724)
Fix oom-score-adj on older distros. (#7724)

Don't assume `ps` handles `-h` to display output without headers and
manually trim headers line from output.
antirez/redis,oranagra/redis,ofirluzon/redis,oranagra/redis,charsyam/redis,PKRoma/redis,yossigo/redis,antirez/redis,ofirluzon/redis,soloestoy/redis,neomantra/redis,charsyam/redis,ctripcorp/redis,yossigo/redis,soloestoy/redis,soloestoy/redis,charsyam/redis,yossigo/redis,charsyam/redis,charsyam/redis,antirez/redis,ctripcorp/redis,PKRoma/redis,yossigo/redis,antirez/redis,neomantra/redis,soloestoy/redis,PKRoma/redis,PKRoma/redis,ctripcorp/redis,ofirluzon/redis,neomantra/redis,oranagra/redis,PKRoma/redis,ofirluzon/redis,yossigo/redis,soloestoy/redis,ctripcorp/redis,neomantra/redis,oranagra/redis,neomantra/redis,oranagra/redis,ofirluzon/redis