[root pom] support overriding the version of dashboard (#11313)
[root pom] support overriding the version of dashboard (#11313)

* support overriding the version of che-dashbaord-war via new property che.dashboard.version

Change-Id: I3627f5572f8a0221e16bc0f08ec56407fe13a0f1
Signed-off-by: nickboldt <07890ba474581ea5307f2cd9be8871a98054762b@redhat.com>

* Florent: che-docs and che-lib should remain 'values' not based on 'che.version'

Change-Id: Iec2033c245f6930aeedd1e50bedbd9dfadc2f5b2
Signed-off-by: nickboldt <07890ba474581ea5307f2cd9be8871a98054762b@redhat.com>

davidfestal/che,akervern/che,davidfestal/che,akervern/che,akervern/che,akervern/che,davidfestal/che,davidfestal/che,davidfestal/che,akervern/che,davidfestal/che,davidfestal/che,codenvy/che,akervern/che,codenvy/che,codenvy/che,davidfestal/che,akervern/che,codenvy/che,davidfestal/che,akervern/che,akervern/che,davidfestal/che