Fetch nexus bitstream and OTT from public bucket

Change-Id: Ibabe81f3b953611fedb31e3b949f6d5d56acc2d8

platforms/nexus/matcha_hw.mk

diff --git a/platforms/nexus/matcha_hw.mk b/platforms/nexus/matcha_hw.mk
index 2c26cda..624988b 100644
--- a/platforms/nexus/matcha_hw.mk
+++ b/platforms/nexus/matcha_hw.mk
@@ -169,11 +169,13 @@
 	find "$(MATCHA_SRC_DIR)/bazel-out/" -type f -wholename "*fastbuild-*/sw/device/examples/spi_passthrough/spi_passthrough_fpga_nexus.bin" |\
 			xargs -I '{}' cp -f '{}' "$(OUT)"
 
+## Fetch latest Nexus bitstream and matching opentitantool
 latest_bitstream: | $(OUT)
-	gsutil cp gs://louhi-cache/artifacts/nexus-bitstream_latest.tar.gz $(OUT)
-	cd $(OUT) && tar xf nexus-bitstream_latest.tar.gz
-	cd $(OUT) && tar xf results/fpga_nexus_smoketest.tar.gz
-
+	curl https://storage.googleapis.com/shodan-public-artifacts/nexus-bitstream_latest.tar.gz -o $(OUT)/nexus-bitstream.tar.gz
+	tar -C $(OUT) -xf $(OUT)/nexus-bitstream.tar.gz
+	tar -C $(OUT) -xf $(OUT)/results/fpga_nexus_smoketest.tar.gz
+	curl https://storage.googleapis.com/shodan-public-artifacts/opentitantool_pkg_latest.tar.gz -o $(OUT)/opentitantool_pkg.tar.gz
+	tar -C $(OUT) -xf $(OUT)/opentitantool_pkg.tar.gz
 
 .PHONY:: matcha_hw_verilator_sim matcha_hw_clean matcha_hw_verilator_tests
 .PHONY:: matcha_sw_all opentitantool_pkg