Failure to correct poetry paths after update

[FroggyFlox]

On my personal Rockstor machine, I recently updated from a pre-Poetry version (4.1.0) to latest Testing (5.0.5). Despite the shameful failure to keep that machine up-to-date until now, the update went without a hiccup.
Since then, however, I did receive an email notification that my scheduled task failed:

/bin/bash: /opt/rockstor//bin/st-pool-scrub: No such file or directory

This look exactly like what was supposed to be corrected by #2558: migrating previous path to poetry venv. After a closer look, we can see that my previous (currently failing) path contains a double // (not sure why). This is why our mechanism to update to poetry paths implemented in #2558 failed. We are indeed looking for the presence of the full path with only single / and thus fail to match that pattern:

>>> import re
>>> pattern = "/opt/rockstor/bin/"
>>> line="42 3 * * 5 root /opt/rockstor//bin/st-pool-scrub 1 \*-*-*-*-*-*"
>>> re.search(pattern, line)
>>>

We may want to update that pattern to:

>>> pattern = "/opt/rockstor[/]+bin/"
>>> re.search(pattern, line)
<re.Match object; span=(16, 35), match='/opt/rockstor//bin/'>

[FroggyFlox]

To do:

• Add unit test for system.osi.replace_pattern_inline() and verify it can correctly treat instances of /
• Update pattern used as detailed above and verify test still passes

[phillxnet]

Closing as:
Fixed by #2771