Run unit tests for copier and chroot without -cover

The chrooting causes testing with coverage counting enabled to output a
warning message which interferes with how they communicate with child
processes.  Disable -cover for those modules by testing them separately
without it.

Signed-off-by: Nalin Dahyabhai <[email protected]>
Signed-off-by: Daniel J Walsh <[email protected]>

Makefile

@@ -179,7 +179,8 @@ tests/testreport/testreport: tests/testreport/testreport.go
 
 .PHONY: test-unit
 test-unit: tests/testreport/testreport
-	$(GO_TEST) -v -tags "$(STORAGETAGS) $(SECURITYTAGS)" -cover $(RACEFLAGS) $(shell $(GO) list ./... | grep -v vendor | grep -v tests | grep -v cmd) -timeout 45m
+	$(GO_TEST) -v -tags "$(STORAGETAGS) $(SECURITYTAGS)" -cover $(RACEFLAGS) $(shell $(GO) list ./... | grep -v vendor | grep -v tests | grep -v cmd | grep -v chroot | grep -v copier) -timeout 45m
+	$(GO_TEST) -v -tags "$(STORAGETAGS) $(SECURITYTAGS)"        $(RACEFLAGS) ./chroot ./copier
 	tmp=$(shell mktemp -d) ; \
 	mkdir -p $$tmp/root $$tmp/runroot; \
 	$(GO_TEST) -v -tags "$(STORAGETAGS) $(SECURITYTAGS)" -cover $(RACEFLAGS) ./cmd/buildah -args --root $$tmp/root --runroot $$tmp/runroot --storage-driver vfs --signature-policy $(shell pwd)/tests/policy.json --registries-conf $(shell pwd)/tests/registries.conf