fix(`config_ini`): convert tabs to single space to prevent false +ves

[myii]

• Fix #162
• Check for any number of tabs after the keyword
• If found, replace them by a single space to match the separator used in the ini_options.present state

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Note, this comment outlines the whole problem: https://github.com/saltstack-formulas/openssh-formula/issues/162#issuecomment-497110278.

Tested sshd_config with all combinations successfully:

Situation	Outcome
Already using single space per line	Only ini_options.present state runs
Single tab per line	Replaced by single space
Multiple tabs per line	Replaced by single space

[aboe76]

@myii nice work, @alxwr thanks for reviewing.

[myii]

Thanks @alxwr and @aboe76.