Add securitystanza, deviceattribute, inittab, useraccount, and nfso tests to AIX schema

[wmunyan]

Abstract A number of recommendations in CIS benchmarks deal with the collection and evaluation of AIX security parameters. This proposal adds the lssec_(test|object|state|item) constructs, allowing for the collection and evaluation of these parameter values.

Link to Proposal https://github.com/OVAL-Community/OVAL/pull/126

Additional context N/A

[wmunyan]

UPDATES:

• Renamed the lssec_test to securitystanza_test so as to not name the test after the command being executed and hopefully help be more descriptive.
• Added new tests to aid in implementation (pretty much in line with what would be needed to implement CIS AIX benchmark):
  • deviceattribute_test: Displays attribute characteristics and possible values of attributes for devices in the system
  • inittab_test: Lists records in the /etc/inittab file.
  • useraccount_test: Displays user account attributes
  • nfso_test: Manages Network File System (NFS) tuning parameters

[wmunyan]

aix-proposal-test-content.zip

[vanderpol]

Related PR has bee merged to develop, closing issue