[MSITE-1028] Upgrade to Maven 4.0.0-beta-5

[michael-o]

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[michael-o]

This PR is intended to create a MVP, not full port.

[michael-o]

This works, but causes IT failures...

[ERROR] The following builds failed:
[ERROR] *  MSITE-504/pom.xml
[ERROR] *  MSITE-354/pom.xml
[ERROR] *  MSITE-484/pom.xml
[ERROR] *  MSITE-506/pom.xml
[ERROR] *  MSITE-644/pom.xml
[ERROR] *  MSITE-609/pom.xml
[ERROR] *  default-reports/pom.xml
[ERROR] *  MSITE-842/pom.xml
[ERROR] *  inheritedReports/pom.xml
[ERROR] *  inheritance-interpolation/pom.xml
[ERROR] *  site-deploy/pom.xml
[ERROR] *  site-sd-stagingSiteURL/pom.xml