bug 972615 - add esr24 relbranches to beagle. r=hwine
bug 972615 - add esr24 relbranches to beagle. r=hwine

mrrrgn/build-mozharness,mozilla/build-mozharness,kartikgupta0909/mozilla-mozharness,simar7/build-mozharness,walac/build-mozharness,lundjordan/mozharness,kartikgupta0909/build-mozharness,lissyx/build-mozharness,escapewindow/mozharness,kartikgupta0909/build-mozharness,armenzg/build-mozharness,mozilla/build-mozharness,lundjordan/mozharness,escapewindow/mozharness,kartikgupta0909/gittest,armenzg/build-mozharness,kartikgupta0909/gittest,simar7/build-mozharness,walac/build-mozharness,kartikgupta0909/mozilla-mozharness,lissyx/build-mozharness,mrrrgn/build-mozharness