Disable the "Press ESCAPE for boot options" prompt in arm64

We had few seconds of delay in arm64 VMs waiting for "Press ESCAPE for
boot options". We can improve the provisioning time by disabling that.

build-edk2

@@ -12,8 +12,8 @@
 # sudo -- bash -c 'apt-get update && apt-get install -y make gcc g++ flex bison nasm m4 uuid-dev g++'
 
 WORKLOADS_DIR="$(pwd)"
-EDK2_COMMIT="8736b8fdca85e02933cdb0a13309de14c9799ece"
-EDK2_PLAT_COMMIT="b5fa396700e728c0e18b512229226f65337bf74a"
+EDK2_COMMIT="edc6681206c1a8791981a2f911d2fb8b3d2f5768"
+EDK2_PLAT_COMMIT="103c88ba5b0c6259fc674e6358c68a85e882e41b"
 ACPICA_COMMIT="f16a0b4d0f0edd7b78a332fcf507be2187fac21e"
 
 set -uex
@@ -104,6 +104,8 @@ build_edk2() {
             build -a X64 -t GCC5 -p OvmfPkg/CloudHv/CloudHvX64.dsc -b RELEASE -n 0
             cp Build/CloudHvX64/RELEASE_GCC5/FV/CLOUDHV.fd "$WORKLOADS_DIR/CLOUDHV-x64.fd"
         elif [ "$architecture" = "aarch64" ]; then
+            # We don't need the "Press ESCAPE for boot options" prompt
+            sed -i 's/\(gEfiMdePkgTokenSpaceGuid.PcdPlatformBootTimeOut|\)[0-9]\+/\10/g' ArmVirtPkg/ArmVirtCloudHv.dsc
             build -a AARCH64 -t GCC5 -p ArmVirtPkg/ArmVirtCloudHv.dsc -b RELEASE -n 0
             cp Build/ArmVirtCloudHv-AARCH64/RELEASE_GCC5/FV/CLOUDHV_EFI.fd "$WORKLOADS_DIR/CLOUDHV-arm64.fd"
         else