build: add option to wipe/rebuild papi

Previously, the only option was to wipe/rebuild all the test dependencies.

Type: make

Change-Id: Ia95d6e800f67bef033dcf614dbfa249c3e43159d
Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>

Makefile

@@ -423,6 +423,9 @@ test-all-debug:
 	$(eval EXTENDED_TESTS=yes)
 	$(call test,vpp,vpp_debug,test)
 
+papi-wipe:
+	@make -C test papi-wipe
+
 test-help:
 	@make -C test help
 

test/Makefile

@@ -252,6 +252,11 @@ cov: wipe-cov reset ext verify-test-dir $(PAPI_INSTALL_DONE)
 wipe-cov: wipe
 	@rm -rf $(BUILD_COV_DIR)
 
+.PHONY: papi-wipe
+
+papi-wipe:
+	@rm -rf $(PAPI_INSTALL_DONE)
+
 .PHONY: checkstyle
 checkstyle: verify-test-dir
 	@virtualenv $(VENV_PATH) -p python3
@@ -275,6 +280,7 @@ help:
 	@echo " test-all-debug      - build and run (all) functional tests (debug build)"
 	@echo " retest              - run functional tests"
 	@echo " retest-debug        - run functional tests (debug build)"
+	@echo " papi-wipe           - rebuild vpp_papi sources"
 	@echo " test-wipe           - wipe (temporary) files generated by unit tests"
 	@echo " test-shell          - enter shell with test environment"
 	@echo " test-shell-debug    - enter shell with test environment (debug build)"