fix(caps): multiple fixes

[aafeijoo-suse]

NOTE: still a draft, because I don't know if it's worth fixing this module nowadays.

Fixes:

• fix(caps): /bin/bash is already installed by the bash module

• fix(caps): add missing dependency from base module
  The caps.sh script calls getarg, which is in dracut-lib.sh.

• fix(caps): replace kexec_disabled with kexec_load_disabled
  The original patch [1] with kexec_disabled was not merged, but it was
  patch [2] with kexec_load_disabled. Also, the kernel admin guide [3] only
  mentions the latter.

[1] https://lore.kernel.org/lkml/[email protected]/
[2] https://lore.kernel.org/lkml/[email protected]/
[3] https://github.com/torvalds/linux/blob/fdf0eaf11452d72945af31804e2a1048ee1b574c/Documentation/admin-guide/sysctl/kernel.rst?plain=1#L453-L465

Checklist

• I have tested it locally
• I have reviewed and updated any documentation if relevant
• I am providing new code and test(s) for it

[stale]

This issue is being marked as stale because it has not had any recent activity. It will be closed if no further activity occurs. If this is still an issue in the latest release of Dracut and you would like to keep it open please comment on this issue within the next 7 days. Thank you for your contributions.