[pyro][PATCH] bitbake.conf: add tools required by testimage to HOSTTOOLS conditionally

[Martin Jansa <martin.jansa@gmail.com>]

From: Chen Qi <Qi.Chen@windriver.com>

Add tools required by testimage to HOSTTOOLS only when testimage is
inherited. These tools, as described in the comment, are only required
by the testimage task. So this change should not have negtive effect.
This would also solve build error on hosts which miss some tool such as scp.

Cherry-picked from rocko 8ca61a5464743ff85b6d26886112750d6ddd13e0

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>
---
 meta/conf/bitbake.conf | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 2dac3a1481..f3994fc642 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -469,7 +469,7 @@ HOSTTOOLS += " \
 "
 
 # Tools needed to run testimage runtime image testing
-HOSTTOOLS += "ip ping ps scp ssh stty"
+HOSTTOOLS += "${@['', 'ip ping ps scp ssh stty'][bb.data.inherits_class('testimage', d)]}"
 
 # Link to these if present
 HOSTTOOLS_NONFATAL += "aws ccache gcc-ar gpg ld.bfd ld.gold nc sftp socat sudo"
-- 
2.15.1