Update release date for 5.2.x
Update release date for 5.2.x

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