[MRELEASE-649] release:prepare - ignores SNAPSHOT version in pluginManagement section

**[Marcus Linke](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=mlinke)** opened **[MRELEASE-649](https://issues.apache.org/jira/browse/MRELEASE-649?redirect=false)** and commented

When release prepare a project with a pom.xml that defines a SNAPSHOT version in its \ section, the plugin should detect that and ask the user for the release version as is does it for dependencies versions already. This is especially needed if the project to be released is of package type 'pom' and acts as a parent pom for other projects. Otherwise this raises an error later when try to release one of these child projects.

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**Affects:** 2.1

8 votes, 10 watchers

Start by reproducing release:prepare with a pom.xml whose pluginManagement section contains a SNAPSHOT version, especially for a project with package type 'pom'. Compare this handling with the existing dependency-version prompt; done means the plugin detects the pluginManagement SNAPSHOT and asks for its release version before child-project release errors occur.

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