TS-3823 Fix tests for -lpthread since the previous commit breaks on FreeBSD
TS-3823 Fix tests for -lpthread since the previous commit breaks on FreeBSD

bryancall/trafficserver,chenglongwei/trafficserver,davidbz/trafficserver,bryancall/trafficserver,dyrock/trafficserver,reveller/trafficserver,pbchou/trafficserver,davidbz/trafficserver,clearswift/trafficserver,dyrock/trafficserver,chenglongwei/trafficserver,taoyunxing/trafficserver,PSUdaemon/trafficserver,rpufky/trafficserver,clearswift/trafficserver,duke8253/trafficserver,pbchou/trafficserver,rpufky/trafficserver,PSUdaemon/trafficserver,reveller/trafficserver,chenglongwei/trafficserver,clearswift/trafficserver,bryancall/trafficserver,reveller/trafficserver,chitianhao/trafficserver,clearswift/trafficserver,persiaAziz/trafficserver,persiaAziz/trafficserver,bryancall/trafficserver,dyrock/trafficserver,pbchou/trafficserver,persiaAziz/trafficserver,duke8253/trafficserver,bryancall/trafficserver,reveller/trafficserver,SolidWallOfCode/trafficserver,taoyunxing/trafficserver,davidbz/trafficserver,pbchou/trafficserver,chenglongwei/trafficserver,persiaAziz/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,taoyunxing/trafficserver,rpufky/trafficserver,taoyunxing/trafficserver,chenglongwei/trafficserver,reveller/trafficserver,chitianhao/trafficserver,duke8253/trafficserver,vmamidi/trafficserver,chenglongwei/trafficserver,rpufky/trafficserver,persiaAziz/trafficserver,clearswift/trafficserver,vmamidi/trafficserver,rahmalik/trafficserver,rahmalik/trafficserver,dyrock/trafficserver,taoyunxing/trafficserver,chenglongwei/trafficserver,SolidWallOfCode/trafficserver,pbchou/trafficserver,SolidWallOfCode/trafficserver,davidbz/trafficserver,persiaAziz/trafficserver,rpufky/trafficserver,clearswift/trafficserver,rahmalik/trafficserver,rahmalik/trafficserver,clearswift/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,persiaAziz/trafficserver,PSUdaemon/trafficserver,SolidWallOfCode/trafficserver,reveller/trafficserver,rpufky/trafficserver,vmamidi/trafficserver,duke8253/trafficserver,PSUdaemon/trafficserver,reveller/trafficserver,clearswift/trafficserver,vmamidi/trafficserver,rpufky/trafficserver,rahmalik/trafficserver,PSUdaemon/trafficserver,dyrock/trafficserver,chitianhao/trafficserver,bryancall/trafficserver,vmamidi/trafficserver,chitianhao/trafficserver,PSUdaemon/trafficserver,vmamidi/trafficserver,chitianhao/trafficserver,chitianhao/trafficserver,duke8253/trafficserver,rahmalik/trafficserver,taoyunxing/trafficserver,rahmalik/trafficserver,dyrock/trafficserver,pbchou/trafficserver,davidbz/trafficserver,rahmalik/trafficserver,rpufky/trafficserver,taoyunxing/trafficserver,taoyunxing/trafficserver,chenglongwei/trafficserver,persiaAziz/trafficserver,dyrock/trafficserver,rpufky/trafficserver,SolidWallOfCode/trafficserver,duke8253/trafficserver,taoyunxing/trafficserver,SolidWallOfCode/trafficserver,duke8253/trafficserver,reveller/trafficserver,davidbz/trafficserver,reveller/trafficserver,PSUdaemon/trafficserver,clearswift/trafficserver,rahmalik/trafficserver