profiles: softmaker-common: add fstab to private-etc

[hotcapy]

When using private-etc, app "forgets" it's product key and
asks for license activation, despite it has already been done.

Allow access to "/etc/fstab" to avoid it & related GUI error:

The application cannot create a unique identifier.
Please make sure the application has sufficient permissions.

Fixes #5773.

[glitsj16]

LGTM

[kmk3]

(There are a few suggestions but I can't review at the moment; leaving this as
a placeholder)

[kmk3]

(Sorry for the delay)

Change the commit message to something like the following:

softmaker-common.profile: add fstab to private-etc

When using `private-etc`, SoftMaker Office "forgets" that it was activated
already & asks for product key again.

Allowing access to "/etc/fstab" fixes the following error:

    The application cannot create a unique identifier.
    Please make sure the application has sufficient permissions.

Fixes #5773.

Main changes:

• Clarify in the title what the commit does
• Indent error message by 4 spaces
• Add "Fixes #XXX", which makes the issue be closed automatically when the PR
  is merged

See the following for details:

• https://chris.beams.io/posts/git-commit/

Amending the commit message can be done with:

# (change the commit locally)
git checkout patch-1
git commit --amend

# (check the result)
git show

# (change the commit remotely)
git push --force-with-lease

By the way, are you familiar with using git locally?

Knowing how to amend commits would be helpful for contributing in general, but
if this seems too much, I can do the fix.

[kmk3]

hotcapy force-pushed the patch-1 branch from e747284 to 8fe750a

The result looks good.

Sort as per sort.py.

The commit can be amended with:

# (change the file manually)
# [...]

# (redo the commit with the new changes)
git add -u
git commit --amend

# (check the result)
git show

# (change the commit remotely)
git push --force-with-lease

[kmk3]

softmaker-common.profile: add fstab to private-etc

When using `private-etc`, app "forgets" it's product key and
asks for license activation, despite it has already been done.

Allow access to "/etc/fstab" to avoid it & related GUI error:

    The application cannot create a unique identifier.
    Please make sure the application has sufficient permissions.

Fixes #5773.

Nitpick: The wording in the first paragraph is a bit strange; I'd change the
commit message to the following:

softmaker-common.profile: add fstab to private-etc

When using `private-etc`, the app "forgets" its product key and
asks for license activation, even though it had already been done.

Allow access to "/etc/fstab" to avoid it & the related GUI error:

    The application cannot create a unique identifier.
    Please make sure the application has sufficient permissions.

Fixes #5773.

(It can be amended with the same commands as in this comment)

Other than that, LGTM.

[hotcapy]

Done :-)

Sorry about previous text version, I guess in exact such moments it becomes obvious that English isn't one's native language.

[kmk3]

LGTM

[kmk3]

Merged, thanks!