Add skip-auto-install capability in Scan-Repository flow #3123

Job	Run time
Pretest	1m 13s
Azure Integration Tests (ubuntu)	31s
Azure Integration Tests (windows)	19s
Unit Tests (ubuntu)	29s
Bitbucket Server Integration Tests	43s
Azure Integration Tests (macos)	41s
Unit Tests (windows)	21s
GitHub Integration Tests	36s
Unit Tests (macos)	23s
Scan Repository Tests (ubuntu)	22s
Scan Repository Tests (windows)	17s
GitLab Integration Tests (ubuntu)	35s
GitLab Integration Tests (windows)	9s
Scan Repository Tests (macos)	22s
GitLab Integration Tests (macos)	38s
Scan Pull Request Tests (ubuntu)	20s
Scan Pull Request Tests (windows)	20s
Scan Pull Request Tests (macos)	22s
Package Handlers Tests (ubuntu)	21s
Package Handlers Tests (windows)	18s
Package Handlers Tests (macos)	22s
	9m 42s

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