[AUTO-CHERRYPICK] Added directory check before cleaning-up the RPM caches. - branch 3.0-dev (#10801)

Co-authored-by: Pawel Winogrodzki <pawelwi@microsoft.com>

Author: CBL-Mariner-Bot

toolkit/scripts/imggen.mk

@@ -79,8 +79,10 @@ clean-imagegen:
 # the same, but the actual .rpm files may be fundamentally different.
 $(STATUS_FLAGS_DIR)/imagegen_cleanup.flag: $(depend_REPO_SNAPSHOT_TIME)
 	@echo "REPO_SNAPSHOT_TIME has changed, sanitizing rpm cache"
-	find "$(local_and_external_rpm_cache)" -type f -name '*.rpm' -delete
-	touch $@
+	@if [ -d "$(local_and_external_rpm_cache)" ]; then \
+		find "$(local_and_external_rpm_cache)" -type f -name '*.rpm' -delete; \
+	fi
+	@touch $@
 
 ##help:target:fetch-image-packages=Locate and download all packages required for an image build.
 fetch-image-packages: $(image_package_cache_summary)

toolkit/scripts/pkggen.mk

@@ -269,8 +269,10 @@ clean-compress-srpms:
 # the same, but the actual .rpm files may be fundamentally different.
 $(STATUS_FLAGS_DIR)/build_packages_cache_cleanup.flag: $(depend_REPO_SNAPSHOT_TIME)
 	@echo "REPO_SNAPSHOT_TIME has changed, sanitizing rpm cache"
-	find "$(remote_rpms_cache_dir)" -type f -name '*.rpm' -delete
-	touch $@
+	@if [ -d "$(remote_rpms_cache_dir)" ]; then \
+		find "$(remote_rpms_cache_dir)" -type f -name '*.rpm' -delete; \
+	fi
+	@touch $@
 
 ifeq ($(REBUILD_PACKAGES),y)
 $(RPMS_DIR): $(STATUS_FLAGS_DIR)/build-rpms.flag