Remove slash from audit login_events description

[yuumasato]

Description:

• Remove slash from example faillock audit rule
• Update scenario for SSGTestSuite

Rationale:

• From audit PoV, it doesn't matter if the trailing slash is there or not. But our check is written so that the slash should no be there.
• Based on discussion in OVAL: audit_rules_login_events optional trailing slash #2710 and confusion regarding recommended manual fix.

[dahaic]

@yuumasato when you are touching this, can you rename default.fail.sh scenario to more meaningful empty.fail.sh? Default is bit ambiguous.

[yuumasato]

@dahaic Sure, done.

[scrutinizer-notifier]

The inspection completed: No new issues

[dahaic]

Thanks @yuumasato . Ack