lib/oe/lsb.py: Prioritize parsing of /etc/os-release

Moved parsing of /etc/os-release before parsing of
/etc/SuSE-release as /etc/SuSE-release is deprecated in
recent releases of OpenSuSE.

Here is the quote from /etc/SuSE-release:
/etc/SuSE-release is deprecated and will be removed in the future,
use /etc/os-release instead

(From OE-Core rev: b3852bebb850048389994993e3717e54020c662f)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oe/lsb.py

@@ -37,14 +37,6 @@ def release_dict_file():
             if match:
                 data['DISTRIB_ID'] = match.group(1)
                 data['DISTRIB_RELEASE'] = match.group(2)
-        elif os.path.exists('/etc/SuSE-release'):
-            data = {}
-            data['DISTRIB_ID'] = 'SUSE LINUX'
-            with open('/etc/SuSE-release') as f:
-                for line in f:
-                    if line.startswith('VERSION = '):
-                        data['DISTRIB_RELEASE'] = line[10:].rstrip()
-                        break
         elif os.path.exists('/etc/os-release'):
             data = {}
             with open('/etc/os-release') as f:
@@ -53,6 +45,15 @@ def release_dict_file():
                         data['DISTRIB_ID'] = line[5:].rstrip().strip('"')
                     if line.startswith('VERSION_ID='):
                         data['DISTRIB_RELEASE'] = line[11:].rstrip().strip('"')
+        elif os.path.exists('/etc/SuSE-release'):
+            data = {}
+            data['DISTRIB_ID'] = 'SUSE LINUX'
+            with open('/etc/SuSE-release') as f:
+                for line in f:
+                    if line.startswith('VERSION = '):
+                        data['DISTRIB_RELEASE'] = line[10:].rstrip()
+                        break
+
     except IOError:
         return None
     return data