qa/tests: drop parens from all health-code ignorelist entries

Monitor.cc logs a "Health check cleared: <CODE> (was: ...)" line
for any health check clearing mid-test, with the code bare (no
parens) -- while the "Health check failed"/"Health check failed
(unmute)" lines wrap the code in parens. Every \(CODE\) entry in
this file therefore only matches the raise/failed form and misses
the corresponding cleared form, the same gap just fixed for
POOL_FULL.

Drop the escaped parens from the remaining entries so each matches
both log forms, consistent with the bare entries already present
(OSD_ROOT_DOWN, MDS_INSUFFICIENT_STANDBY, POOL_FULL).

Non-code entries (reached quota, overall HEALTH_, slow request,
noscrub, nodeep-scrub, osds down, insufficient standby, etc.) are
unchanged.

Fixes: https://tracker.ceph.com/issues/78149
Signed-off-by: Yuri Weinstein <yweinste@redhat.com>
(cherry picked from commit 8b261cd505)

qa/overrides/upgrade_ignorelist_health.yaml

@@ -1,21 +1,21 @@
 overrides:
   ceph:
     log-ignorelist:
-      - \(MDS_ALL_DOWN\)
-      - \(MDS_UP_LESS_THAN_MAX\)
-      - \(OSD_SLOW_PING_TIME
+      - MDS_ALL_DOWN
+      - MDS_UP_LESS_THAN_MAX
+      - OSD_SLOW_PING_TIME
       - reached quota
       - overall HEALTH_
-      - \(CACHE_POOL_NO_HIT_SET\)
+      - CACHE_POOL_NO_HIT_SET
       - POOL_FULL
-      - \(SMALLER_PGP_NUM\)
-      - \(SLOW_OPS\)
-      - \(CACHE_POOL_NEAR_FULL\)
-      - \(POOL_APP_NOT_ENABLED\)
-      - \(PG_AVAILABILITY\)
-      - \(OBJECT_MISPLACED\)
+      - SMALLER_PGP_NUM
+      - SLOW_OPS
+      - CACHE_POOL_NEAR_FULL
+      - POOL_APP_NOT_ENABLED
+      - PG_AVAILABILITY
+      - OBJECT_MISPLACED
       - slow request
-      - \(MON_DOWN\)
+      - MON_DOWN
       - noscrub
       - nodeep-scrub
       - running out of quota