iis: Adds cleanup methods to the installer
iis: Adds cleanup methods to the installer

Older versions of ModSecurity left files/configurations behind. This commit
adds capability to cleanup the IIS configuration files.

hbopuri/ModSecurity,sdgdsffdsfff/ModSecurity,beikezcs/ModSecurity,wafbuild/ModSecurity,irtnog/ModSecurity,hbopuri/ModSecurity,daniilyar/ModSecurity,defanator/ModSecurity,daniilyar/ModSecurity,irtnog/ModSecurity,hbopuri/ModSecurity,csanders-git/ModSecurity,daniilyar/ModSecurity,marcstern/ModSecurity,p0pr0ck5/ModSecurity,sdgdsffdsfff/ModSecurity,daniilyar/ModSecurity,rosmo/ModSecurity,swebru/ModSecurity,bjh7242/ModSecurity,csanders-git/ModSecurity,csanders-git/ModSecurity,sdgdsffdsfff/ModSecurity,swebru/ModSecurity,hbopuri/ModSecurity,bjh7242/ModSecurity,beikezcs/ModSecurity,irtnog/ModSecurity,irtnog/ModSecurity,daniilyar/ModSecurity,rosmo/ModSecurity,bjh7242/ModSecurity,sdgdsffdsfff/ModSecurity,rosmo/ModSecurity,defanator/ModSecurity,SpiderLabs/ModSecurity,swebru/ModSecurity,swebru/ModSecurity,p0pr0ck5/ModSecurity,csanders-git/ModSecurity,p0pr0ck5/ModSecurity,phpModSecurity/ModSecurity,sdgdsffdsfff/ModSecurity,csanders-git/ModSecurity,marcstern/ModSecurity,csanders-git/ModSecurity,irtnog/ModSecurity,beikezcs/ModSecurity,SpiderLabs/ModSecurity,swebru/ModSecurity,beikezcs/ModSecurity,hbopuri/ModSecurity,rosmo/ModSecurity,sdgdsffdsfff/ModSecurity,bjh7242/ModSecurity,p0pr0ck5/ModSecurity,SpiderLabs/ModSecurity,irtnog/ModSecurity,p0pr0ck5/ModSecurity,bjh7242/ModSecurity,beikezcs/ModSecurity,p0pr0ck5/ModSecurity,bjh7242/ModSecurity,defanator/ModSecurity,marcstern/ModSecurity,hbopuri/ModSecurity,beikezcs/ModSecurity,daniilyar/ModSecurity,wafbuild/ModSecurity,swebru/ModSecurity,wafbuild/ModSecurity,marcstern/ModSecurity,marcstern/ModSecurity