TS-1996: disable deprecation warnings for the rfc5861 plugin
TS-1996: disable deprecation warnings for the rfc5861 plugin

The RFC5861 plugin still uses the deprecated TSHttpTxnNewCacheLookupDo()
API. Turn off -Wdeprecated until this plugin can use a different
API.

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