AMBARI-25876: Bump version to 3.0.0-SNAPSHOT

[kevinw66]

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[sekikn]

+1, ensured that all version numbers in the code were updated and mvn clean install -Dbuild-rpm was successful on CentOS 7. Thanks @kevinw66!

$ rpm -qip ambari-metrics-assembly/target/rpm/ambari-metrics-collector/RPMS/x86_64/ambari-metrics-collector-3.0.0-SNAPSHOT.x86_64.rpm 
Name        : ambari-metrics-collector
Version     : 3.0.0
Release     : SNAPSHOT
...

[virajjasani]

I thought we wanted to go with 2.8.0? But 3.0.0 is fine too since we don't have any released version numbers closer to 3.0.0.

Besides, Ambari 2.8.0 would be the first release with ambari-metrics getting released separately, correct?

[kevinw66]

I thought we wanted to go with 2.8.0? But 3.0.0 is fine too since we don't have any released version numbers closer to 3.0.0.

@virajjasani Since we change the format of the version number, upgrade major version might be better I think.

Besides, Ambari 2.8.0 would be the first release with ambari-metrics getting released separately, correct?

Yes.

[virajjasani]

Sounds good, thanks @kevinw66