Resource mounting problems on resource that supports tags

[eerkunt]

As also reported in #168, a problem exists where resource mounting and recursive searching were causing a problem on resources that support tags where we should not either do recursive searching or resource mounting.

This PR will disable resource mounting on scenarios where resources that support tags are used.

[coveralls]

Pull Request Test Coverage Report for Build 621

• 32 of 35 (91.43%) changed or added relevant lines in 3 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.3%) to 78.366%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
terraform_compliance/common/helper.py	10	11	90.91%
terraform_compliance/extensions/terraform.py	19	21	90.48%

Totals
Change from base Build 619:	0.3%
Covered Lines:	710
Relevant Lines:	906

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💛 - Coveralls