octopus: mgr/progress: ensure progress stays between [0,1]

[k0ste]

backport tracker: https://tracker.ceph.com/issues/50778

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backport of #41094
parent tracker: https://tracker.ceph.com/issues/50591

this backport was staged using ceph-backport.sh version 16.0.0.6848
find the latest version at https://github.com/ceph/ceph/blob/master/src/script/ceph-backport.sh

[tchaikov]

/home/jenkins-build/build/workspace/ceph-pull-requests/src/test/smoke.sh:56: TEST_multimon:  timeout 8 rados -p foo bench 4 write -b 4096 --no-cleanup
hints = 1
Maintaining 16 concurrent writes of 4096 bytes to objects of size 4096 for up to 4 seconds or 0 objects
Object prefix: benchmark_data_irvingi08.front.sepia.ceph.co_3754091
  sec Cur ops   started  finished  avg MB/s  cur MB/s last lat(s)  avg lat(s)
    0      16        16         0         0         0           -           0
    1      16        24         8  0.031132   0.03125     1.00195    0.980444
    2      16        33        17 0.0331385 0.0351562    0.877772    0.990953
    3      16        65        49 0.0637163     0.125    0.160657    0.763366
    4      16        67        51  0.049753 0.0078125     1.32335     0.78535
Total time run:         4.49867
Total writes made:      67
Write size:             4096
Object size:            4096
Bandwidth (MB/sec):     0.0581769
Stddev Bandwidth:       0.051564
Max bandwidth (MB/sec): 0.125
Min bandwidth (MB/sec): 0.0078125
Average IOPS:           14
Stddev IOPS:            13.2004
Max IOPS:               32
Min IOPS:               2
Average Latency(s):     1.06478
Stddev Latency(s):      0.65623
Max latency(s):         2.11914
Min latency(s):         0.151137
/home/jenkins-build/build/workspace/ceph-pull-requests/src/test/smoke.sh:56: TEST_multimon:  return 1