fix: correctly retry device read when device is unstable

Cause: The retry loop for reading from a device would bail out of the loop
before retrying because the loop should have used a greater-than-or-equal
to test the retry condition rather than a less-than.

Consequence: If the device is not stable, the loop would bail and issue
an exception rather than trying to retry the read.

Fix: Use the correct loop condition.

Result: The network role can correctly retry the read when the device
is unstable.

Signed-off-by: Rich Megginson <rmeggins@redhat.com>

library/network_connections.py

@@ -235,7 +235,7 @@ class SysUtil:
                             "cannot read stable link-infos. They keep changing"
                         )
                 except Exception:
-                    if try_count < 50:
+                    if try_count >= 50:
                         raise
                     continue
                 break