Hotfix: Handle UNAVAILABLE and UNKNOWN rocoto status in Bash CI (#2820)

# Description
From time to time, PBS pro cannot return a `qstat` response within a
given time limit set by `rocoto` (default is 45 seconds). If that
happens, then an `UNAVAILABLE` status will be returned for the given
job. This PR adds checking for this status to allow CI processing to
continue.

ci/scripts/utils/rocotostat.py

@@ -136,7 +136,7 @@ def rocoto_statcount(rocotostat):
     rocotostat_output = [line.split()[0:4] for line in rocotostat_output]
     rocotostat_output = [line for line in rocotostat_output if len(line) != 1]
 
-    status_cases = ['SUCCEEDED', 'FAIL', 'DEAD', 'RUNNING', 'SUBMITTING', 'QUEUED']
+    status_cases = ['SUCCEEDED', 'FAIL', 'DEAD', 'RUNNING', 'SUBMITTING', 'QUEUED', 'UNAVAILABLE']
 
     rocoto_status = {}
     status_counts = Counter(case for sublist in rocotostat_output for case in sublist)
@@ -214,9 +214,16 @@ def is_stalled(rocoto_status):
     elif rocoto_status['DEAD'] > 0:
         error_return = rocoto_status['FAIL'] + rocoto_status['DEAD']
         rocoto_state = 'FAIL'
-    elif 'UNKNOWN' in rocoto_status:
-        error_return = rocoto_status['UNKNOWN']
-        rocoto_state = 'UNKNOWN'
+    elif 'UNAVAILABLE' in rocoto_status or 'UNKNOWN' in rocoto_status:
+        rocoto_status = attempt_multiple_times(lambda: rocoto_statcount(rocotostat), 2, 120, ProcessError)
+        error_return = 0
+        rocoto_state = 'RUNNING'
+        if 'UNAVAILABLE' in rocoto_status:
+            error_return = rocoto_status['UNAVAILABLE']
+            rocoto_state = 'UNAVAILABLE'
+        if 'UNKNOWN' in rocoto_status:
+            error_return += rocoto_status['UNKNOWN']
+            rocoto_state = 'UNKNOWN'
     elif is_stalled(rocoto_status):
         rocoto_status = attempt_multiple_times(lambda: rocoto_statcount(rocotostat), 2, 120, ProcessError)
         if is_stalled(rocoto_status):