Move ssh_util from galaxy_test.base to galaxy.security

so it can be used by both unit tests of the `galaxy-app` package and by integration tests

test/integration/test_cli_runners.py

@@ -7,8 +7,8 @@ import tempfile
 import unittest
 from typing import ClassVar, NamedTuple
 
+from galaxy.security.ssh_util import generate_ssh_keys
 from galaxy_test.base.populators import skip_without_tool
-from galaxy_test.base.ssh_util import generate_ssh_keys
 from galaxy_test.driver import integration_util
 from .test_job_environments import BaseJobEnvironmentIntegrationTestCase
 

test/unit/app/test_remote_shell.py

@@ -8,7 +8,7 @@ except ImportError:
     raise unittest.SkipTest("Skipping tests that require mockssh")
 
 from galaxy.jobs.runners.cli import CliInterface
-from galaxy_test.base.ssh_util import generate_ssh_keys, SSHKeys
+from galaxy.security.ssh_util import generate_ssh_keys, SSHKeys
 
 
 class TestCliInterface(unittest.TestCase):