[bugfix] [RHEL/6, RHEL/7] Start using the supercompliance version of accounts umask OVAL check for: 1, /etc/login.defs 2, /etc/bashrc 3, /etc/csh.cshrc 4, /etc/init.d/functions (AKA umask_for_daemons) files

This change applies the previously created umask template against following four files:
1) /etc/login.defs,
2) /etc/bashrc,
3) /etc/csh.cshrc, and
4) /etc/init.d/functions (aka umask_for_daemons OVAL check)

Each patch has been tested on both RHEL-6 & RHEL-7 systems as follows:
* try to use shared/oval/testcheck.py with appropriate OVAL check with expected value pre-defined (works fine),
* make validate for RHEL/6 still passes,
* both RHEL/6 & RHEL/7 rpms build successfully, and
* last but not least the modified checks work as expected for all four cases (tested for various umask configurations) via scap-workbench.

Please review.

Thanks, Jan.

P.S.: / Note: I am aware the checks aren't optimalized (since var_accounts_user_umask variable) is processed three times for the three checks (/etc/login.defs, /etc/bashrc, /etc/csh.cshrc) => more warnings appear during the package built, but these are just redundant & don't have impact on proper function of the OVAL checks. I will fix / unify / optimize the redundant OVAL variables within 0.1.20 release as part of:
  [1] https://github.com/OpenSCAP/scap-security-guide/issues/50

upstream issue fix (no time space to do this till 0.1.19 deadline).