CA-411927: guard check with presence of ScsiId key

Otherwise we can get a key error. This check is looking for a legacy
ScsiId key which only existed in some experimental SM
implementations. Just be careful to ensure that both provider and
ScsiId exist in case this is necessary.

Signed-off-by: Mark Syms <mark.syms@cloud.com>

Author: MarkSymsCtx

libs/sm/mpathcount.py

@@ -156,7 +156,7 @@ def get_SCSIidlist(devconfig, sm_config):
         SCSIidlist = sm_config['SCSIid'].split(',')
     elif 'SCSIid' in devconfig:
         SCSIidlist.append(devconfig['SCSIid'])
-    elif 'provider' in devconfig:
+    elif 'provider' in devconfig and 'ScsiId' in devconfig:
         SCSIidlist.append(devconfig['ScsiId'])
     else:
         for key in sm_config: