Ruby: Ensure snoop requests are sent using sendTimingSnoopReq
Ruby: Ensure snoop requests are sent using sendTimingSnoopReq

This patch fixes a bug that caused snoop requests to be placed in a
packet queue. Instead, the packet is now sent immediately using
sendTimingSnoopReq, thus bypassing the packet queue and any normal
responses waiting to be sent.

powerjg/gem5-ci-test,SanchayanMaity/gem5,yb-kim/gemV,joerocklin/gem5,kaiyuanl/gem5,briancoutinho0905/2dsampling,KuroeKurose/gem5,HwisooSo/gemV-update,powerjg/gem5-ci-test,sobercoder/gem5,briancoutinho0905/2dsampling,briancoutinho0905/2dsampling,powerjg/gem5-ci-test,zlfben/gem5,TUD-OS/gem5-dtu,gedare/gem5,austinharris/gem5-riscv,TUD-OS/gem5-dtu,gedare/gem5,joerocklin/gem5,rjschof/gem5,kaiyuanl/gem5,sobercoder/gem5,yb-kim/gemV,aclifton/cpeg853-gem5,KuroeKurose/gem5,markoshorro/gem5,yb-kim/gemV,qizenguf/MLC-STT,Weil0ng/gem5,samueldotj/TeeRISC-Simulator,yb-kim/gemV,HwisooSo/gemV-update,samueldotj/TeeRISC-Simulator,zlfben/gem5,KuroeKurose/gem5,rallylee/gem5,austinharris/gem5-riscv,gem5/gem5,yb-kim/gemV,rallylee/gem5,yb-kim/gemV,cancro7/gem5,rjschof/gem5,gedare/gem5,rallylee/gem5,joerocklin/gem5,joerocklin/gem5,gem5/gem5,briancoutinho0905/2dsampling,SanchayanMaity/gem5,powerjg/gem5-ci-test,zlfben/gem5,briancoutinho0905/2dsampling,gedare/gem5,sobercoder/gem5,KuroeKurose/gem5,markoshorro/gem5,markoshorro/gem5,rjschof/gem5,TUD-OS/gem5-dtu,sobercoder/gem5,rallylee/gem5,rjschof/gem5,qizenguf/MLC-STT,HwisooSo/gemV-update,kaiyuanl/gem5,gem5/gem5,rjschof/gem5,aclifton/cpeg853-gem5,zlfben/gem5,qizenguf/MLC-STT,markoshorro/gem5,samueldotj/TeeRISC-Simulator,Weil0ng/gem5,powerjg/gem5-ci-test,TUD-OS/gem5-dtu,cancro7/gem5,zlfben/gem5,cancro7/gem5,SanchayanMaity/gem5,powerjg/gem5-ci-test,rallylee/gem5,yb-kim/gemV,qizenguf/MLC-STT,HwisooSo/gemV-update,KuroeKurose/gem5,rallylee/gem5,sobercoder/gem5,kaiyuanl/gem5,joerocklin/gem5,SanchayanMaity/gem5,kaiyuanl/gem5,cancro7/gem5,qizenguf/MLC-STT,aclifton/cpeg853-gem5,joerocklin/gem5,KuroeKurose/gem5,austinharris/gem5-riscv,joerocklin/gem5,zlfben/gem5,samueldotj/TeeRISC-Simulator,Weil0ng/gem5,yb-kim/gemV,aclifton/cpeg853-gem5,kaiyuanl/gem5,Weil0ng/gem5,samueldotj/TeeRISC-Simulator,SanchayanMaity/gem5,samueldotj/TeeRISC-Simulator,aclifton/cpeg853-gem5,briancoutinho0905/2dsampling,gedare/gem5,rjschof/gem5,austinharris/gem5-riscv,austinharris/gem5-riscv,cancro7/gem5,Weil0ng/gem5,cancro7/gem5,zlfben/gem5,joerocklin/gem5,cancro7/gem5,austinharris/gem5-riscv,markoshorro/gem5,kaiyuanl/gem5,markoshorro/gem5,aclifton/cpeg853-gem5,SanchayanMaity/gem5,austinharris/gem5-riscv,Weil0ng/gem5,rallylee/gem5,gedare/gem5,HwisooSo/gemV-update,gedare/gem5,qizenguf/MLC-STT,gem5/gem5,aclifton/cpeg853-gem5,Weil0ng/gem5,gem5/gem5,markoshorro/gem5,TUD-OS/gem5-dtu,samueldotj/TeeRISC-Simulator,sobercoder/gem5,KuroeKurose/gem5,sobercoder/gem5,powerjg/gem5-ci-test,TUD-OS/gem5-dtu,TUD-OS/gem5-dtu,HwisooSo/gemV-update,gem5/gem5,SanchayanMaity/gem5,HwisooSo/gemV-update,briancoutinho0905/2dsampling,qizenguf/MLC-STT,gem5/gem5,rjschof/gem5