Adds: dir scan errors in human readable output format

[Rchanger]

Now human-readable(default) out format will also include the scan errors.

Example of output with errors.

Scan Errors - 

	IaC Type            :	arm
	Directory           :	/terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	Error Message       :	ARM files not found in the directory /terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	
	-----------------------------------------------------------------------
	
	IaC Type            :	docker
	Directory           :	/terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	Error Message       :	Dockerfile not found in the directory /terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	
	-----------------------------------------------------------------------
	
	IaC Type            :	cft
	Directory           :	/terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	Error Message       :	error while loading iac file '/terrascan/test/e2e/test_data/iac/aws/aws_ami_violation/config.yaml', err: failed to find valid Resources key in file: /terrascan/test/e2e/test_data/iac/aws/aws_ami_violation/config.yaml
	
	-----------------------------------------------------------------------
	
	IaC Type            :	kustomize
	Directory           :	/terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	Error Message       :	kustomization.y(a)ml file not found in the directory /terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	
	-----------------------------------------------------------------------
	
	IaC Type            :	helm
	Directory           :	/Users/suvarna/go/src/github.com/rchanger/terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	Error Message       :	no helm charts found in directory /Users/suvarna/go/src/github.com/rchanger/terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	
	-----------------------------------------------------------------------
	
	

Violation Details -
    
	Description    :	Enable AWS AMI Encryption
	File           :	main.tf
	Module Name    :	root
	Plan Root      :	./
	Line           :	5
	Severity       :	MEDIUM
	
	-----------------------------------------------------------------------
	
	Description    :	TLS disabled can affect the confidentiality of the data in transit
	File           :	config.yaml
	Line           :	1
	Severity       :	HIGH
	
	-----------------------------------------------------------------------
	

Scan Summary -

	File/Folder         :	/Users/suvarna/go/src/github.com/rchanger/terrascan/test/e2e/test_data/iac/aws/aws_ami_violation
	IaC Type            :	k8s,terraform
	Scanned At          :	2022-03-25 06:53:32.16055 +0000 UTC
	Policies Validated  :	8
	Violated Policies   :	2
	Low                 :	0
	Medium              :	1
	High                :	1
	

[codecov]

Codecov Report

Merging #1196 (e574c31) into master (d2cf489) will decrease coverage by 0.05%.
The diff coverage is 72.09%.

@@            Coverage Diff             @@
##           master    #1196      +/-   ##
==========================================
- Coverage   77.82%   77.77%   -0.06%     
==========================================
  Files         272      272              
  Lines        7643     7675      +32     
==========================================
+ Hits         5948     5969      +21     
- Misses       1345     1353       +8     
- Partials      350      353       +3     

Impacted Files	Coverage Δ
pkg/iac-providers/kubernetes/v1/types.go	100.00% <ø> (ø)
pkg/iac-providers/kustomize/commons/load-dir.go	57.89% <ø> (-0.34%)	⬇️
pkg/iac-providers/kustomize/v2/load-dir.go	0.00% <0.00%> (ø)
pkg/iac-providers/kustomize/v3/load-dir.go	0.00% <0.00%> (ø)
pkg/iac-providers/terraform/v12/load-dir.go	66.66% <0.00%> (-33.34%)	⬇️
pkg/iac-providers/tfplan/v1/load-dir.go	50.00% <0.00%> (-50.00%)	⬇️
pkg/iac-providers/kubernetes/v1/load-dir.go	65.38% <25.00%> (-7.35%)	⬇️
pkg/iac-providers/cft/v1/load-dir.go	84.21% <40.00%> (-15.79%)	⬇️
pkg/runtime/executor.go	90.69% <81.81%> (-0.77%)	⬇️
pkg/iac-providers/arm/v1/load-dir.go	69.49% <100.00%> (+2.21%)	⬆️
... and 6 more

[cesar-rodriguez]

Can we also change the dockerfile warning so that it's displayed as part of these errors. Maybe a separate warning section as it's actually not an error.

[cesar-rodriguez]

Also, in the scan summary can we add which IaC types were discovered?

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication