oeqa/selftest/gcc: Fix host key verfication failure

while runnig oe-selftest for gcc, testcases that need to be run on qemu are not running due to below failures.
- Executing on ssh: mkdir -p /tmp/runtest.3549641   (timeout = 300)
   spawn [open ...]
   Host key verification failed.
   ERROR: Couldn't create remote directory /tmp/runtest.3549641 on ssh

Host key verification failure is happening when ssh board config file name is
defined as "ssh.exp" and there are multiple ssh.exp files generated during the build
and a wrong ssh config was taken. To resolve this changed the board config file name
to "linux-ssh.exp" which ensures correct ssh settings are used.

(From OE-Core rev: d32ec0b4d242879ab8eaf96e1cb407e8f0bb9f3d)

Signed-off-by: Harish Sadineni <Harish.Sadineni@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/selftest/cases/gcc.py

@@ -37,7 +37,7 @@ class GccSelfTestBase(OESelftestTestCase, OEPTestResultTestCase):
         features = []
         features.append('MAKE_CHECK_TARGETS = "{0}"'.format(" ".join(targets)))
         if ssh is not None:
-            features.append('TOOLCHAIN_TEST_TARGET = "ssh"')
+            features.append('TOOLCHAIN_TEST_TARGET = "linux-ssh"')
             features.append('TOOLCHAIN_TEST_HOST = "{0}"'.format(ssh))
             features.append('TOOLCHAIN_TEST_HOST_USER = "root"')
             features.append('TOOLCHAIN_TEST_HOST_PORT = "22"')

meta/recipes-devtools/gcc/gcc-testsuite.inc

@@ -101,7 +101,7 @@ python check_prepare() {
         f.write(generate_qemu_linux_user_config(d))
 
     # write out target ssh board config
-    with open(os.path.join(dejagnudir, "ssh.exp"), "w") as f:
+    with open(os.path.join(dejagnudir, "linux-ssh.exp"), "w") as f:
         f.write(generate_remote_ssh_linux_config(d))
 
     # generate site.exp to provide boards