[OE-core] [PATCHv2 3/3] package_manager.py: set dnf's releasever setting from DISTRO_CODENAME

[Alexander Kanavin]

So that:

1) dnf does not complain anymore about releasever not being set and then fail
for the same reason;

2) it's possible to refer to $releasever in dnf package feed configuration
(repo paths in particular) without hardconding the release name (pyro, morty, etc.)

Signed-off-by: Alexander Kanavin <alexander.kanavin at linux.intel.com>
---
 meta/lib/oe/package_manager.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/meta/lib/oe/package_manager.py b/meta/lib/oe/package_manager.py
index bc4e3013f0c..72503eb9d38 100644
--- a/meta/lib/oe/package_manager.py
+++ b/meta/lib/oe/package_manager.py
@@ -494,9 +494,11 @@ class RpmPM(PackageManager):
         # This prevents accidental matching against libsolv's built-in policies
         if len(archs) <= 1:
             archs = archs + ["bogusarch"]
-        archconfdir = "%s/%s" %(self.target_rootfs, "etc/dnf/vars/")
-        bb.utils.mkdirhier(archconfdir)
-        open(archconfdir + "arch", 'w').write(":".join(archs))
+        confdir = "%s/%s" %(self.target_rootfs, "etc/dnf/vars/")
+        bb.utils.mkdirhier(confdir)
+        open(confdir + "arch", 'w').write(":".join(archs))
+        distro_codename = self.d.getVar('DISTRO_CODENAME')
+        open(confdir + "releasever", 'w').write(distro_codename if distro_codename is not None else '')
 
         open(oe.path.join(self.target_rootfs, "etc/dnf/dnf.conf"), 'w').write("")
 
-- 
2.11.0