Fix alias validation regex
Merge pull request #2965 from kraman/alias_regex_fix

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Rename migrate to upgrade in code

Trello: https://trello.com/c/1KV8NmDJ (online_runtime_319)
Merge pull request #2967 from pmorie/dev/os_migrations

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Merge pull request #2927 from smarterclayton/bug_970257_support_git_at_urls

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Bug 977034 - Removing IDENT breaks deconfigure
Bug 977034 - Removing IDENT breaks destroy

* introduced error when logging error message
Merge pull request #2968 from jwhonce/bug/977034

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Distribution model is cleaner, API tests