tests: use tests/venv to run basevm.py-based scripts

This patch co-opts the virtual environment being used by avocado tests
to also run the basevm.py tests. This is being done in preparation for
for the qemu.qmp package being removed from qemu.git.

As part of the change, remove any sys.path() hacks and treat "qemu" as a
normal third-party import.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220526000921.1581503-8-jsnow@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tests/vm/Makefile.include

@@ -84,10 +84,11 @@ vm-clean-all:
 
 $(IMAGES_DIR)/%.img:	$(SRC_PATH)/tests/vm/% \
 			$(SRC_PATH)/tests/vm/basevm.py \
-			$(SRC_PATH)/tests/vm/Makefile.include
+			$(SRC_PATH)/tests/vm/Makefile.include \
+			check-venv
 	@mkdir -p $(IMAGES_DIR)
 	$(call quiet-command, \
-		$(PYTHON) $< \
+		$(TESTS_PYTHON) $< \
 		$(if $(V)$(DEBUG), --debug) \
 		$(if $(GENISOIMAGE),--genisoimage $(GENISOIMAGE)) \
 		$(if $(QEMU_LOCAL),--build-path $(BUILD_DIR)) \
@@ -101,9 +102,9 @@ $(IMAGES_DIR)/%.img:	$(SRC_PATH)/tests/vm/% \
 
 
 # Build in VM $(IMAGE)
-vm-build-%: $(IMAGES_DIR)/%.img
+vm-build-%: $(IMAGES_DIR)/%.img check-venv
 	$(call quiet-command, \
-		$(PYTHON) $(SRC_PATH)/tests/vm/$* \
+		$(TESTS_PYTHON) $(SRC_PATH)/tests/vm/$* \
 		$(if $(V)$(DEBUG), --debug) \
 		$(if $(DEBUG), --interactive) \
 		$(if $(J),--jobs $(J)) \
@@ -127,9 +128,9 @@ vm-boot-serial-%: $(IMAGES_DIR)/%.img
 		-device virtio-net-pci,netdev=vnet \
 	|| true
 
-vm-boot-ssh-%: $(IMAGES_DIR)/%.img
+vm-boot-ssh-%: $(IMAGES_DIR)/%.img check-venv
 	$(call quiet-command, \
-		$(PYTHON) $(SRC_PATH)/tests/vm/$* \
+		$(TESTS_PYTHON) $(SRC_PATH)/tests/vm/$* \
 		$(if $(J),--jobs $(J)) \
 		$(if $(V)$(DEBUG), --debug) \
 		$(if $(QEMU_LOCAL),--build-path $(BUILD_DIR)) \

tests/vm/basevm.py

@@ -18,9 +18,6 @@ import socket
 import logging
 import time
 import datetime
-sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
-from qemu.machine import QEMUMachine
-from qemu.utils import get_info_usernet_hostfwd_port, kvm_available
 import subprocess
 import hashlib
 import argparse
@@ -31,6 +28,9 @@ import multiprocessing
 import traceback
 import shlex
 
+from qemu.machine import QEMUMachine
+from qemu.utils import get_info_usernet_hostfwd_port, kvm_available
+
 SSH_KEY_FILE = os.path.join(os.path.dirname(__file__),
                "..", "keys", "id_rsa")
 SSH_PUB_KEY_FILE = os.path.join(os.path.dirname(__file__),