Make test suites run sequentially with respect to other test suites (#200)

Right now swift testing does not have finer grain test parallelization
controls. As a result our easy options are either to have ALL tests in
ALL test suites run sequentially or have tests within a given test suite
run sequentially while other test suites are run at the same time.

This has been problematic for our CI since we opted for the second
option above, where, for examples, the tests in the builder test suite
run sequentially, but the builder test suite runs at the same time as
the container run test suite. When this happens, a lot of different
tests try to pull the necessary images for testing at the same time,
causing some tests to timeout.

Signed-off-by: Kathryn Baldauf <k_baldauf@apple.com>

Author: katiewasnothere

Makefile

@@ -143,7 +143,12 @@ integration: init-block
 	@echo "Removing any existing containers"
 	@bin/container rm --all
 	@echo "Starting CLI integration tests"
-	@RUN_CLI_INTEGRATION_TESTS=1 $(SWIFT) test -c $(BUILD_CONFIGURATION) $(CURRENT_SDK_ARGS) --filter TestCLI
+	@$(SWIFT) test -c $(BUILD_CONFIGURATION) $(CURRENT_SDK_ARGS) --filter TestCLIRunLifecycle
+	@$(SWIFT) test -c $(BUILD_CONFIGURATION) $(CURRENT_SDK_ARGS) --filter TestCLIExecCommand
+	@$(SWIFT) test -c $(BUILD_CONFIGURATION) $(CURRENT_SDK_ARGS) --filter TestCLIRunCommand
+	@$(SWIFT) test -c $(BUILD_CONFIGURATION) $(CURRENT_SDK_ARGS) --filter TestCLIImagesCommand
+	@$(SWIFT) test -c $(BUILD_CONFIGURATION) $(CURRENT_SDK_ARGS) --filter TestCLIRunBase
+	@$(SWIFT) test -c $(BUILD_CONFIGURATION) $(CURRENT_SDK_ARGS) --filter TestCLIBuildBase
 	@echo Ensuring apiserver stopped after the CLI integration tests...
 	@scripts/ensure-container-stopped.sh