oeqa/sdk: use ensure_*_package helpers

Clean up lots of dependency checking code by using the new helpers.

This means that a lot of tests that were previously skipped inside the
eSDK testing on the autobuilder are now executed, and fail.

(From OE-Core rev: 11277efd057685558a744e98082b5709e849dd2a)

Signed-off-by: Ross Burton <ross.burton@arm.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/sdk/cases/python.py

@@ -4,7 +4,6 @@
 # SPDX-License-Identifier: MIT
 #
 
-import unittest
 from oeqa.sdk.case import OESDKTestCase
 
 from oeqa.utils.subprocesstweak import errors_have_output
@@ -12,9 +11,7 @@ errors_have_output()
 
 class Python3Test(OESDKTestCase):
     def setUp(self):
-        if not (self.tc.hasHostPackage("nativesdk-python3-core") or
-                self.tc.hasHostPackage("python3-core-native")):
-            raise unittest.SkipTest("No python3 package in the SDK")
+        self.ensure_host_package("python3-core", recipe="python3")
 
     def test_python3(self):
         cmd = "python3 -c \"import codecs; print(codecs.encode('Uryyb, jbeyq', 'rot13'))\""