Remove colons from task and configuration names

[jasontedor]

Gradle 5.0 will remove support for colons in configuration and task
names. This commit fixes this for our build by removing all current uses
of colons in configuration and task names.

Relates #27250

[jasontedor]

This removes many lines of warnings like:

The name '_transitive_org.openjdk.jmh:jmh-core:1.17.3' contains at least one of the following characters: [ , /, \, :, <, >, ", ?, *, |]. This has been deprecated and is scheduled to be removed in Gradle 5.0.
	at build_a92y8m4ak5gicu9a6zp2j6xfn$_run_closure1.doCall(/Users/dpilato/Documents/Elasticsearch/dev/elasticsearch/es-master/elasticsearch/benchmarks/build.gradle:52)
	(Run with --stacktrace to get the full stack trace of this deprecation warning.)

and

The name '_plugin_integTestCluster_:plugins:analysis-icu' contains at least one of the following characters: [ , /, \, :, <, >, ", ?, *, |]. This has been deprecated and is scheduled to be removed in Gradle 5.0.

and

The task name 'addPrincipal#hdfs/hdfs.build.elastic.co' contains at least one of the following characters: [ , /, \, :, <, >, ", ?, *, |]. This has been deprecated and is scheduled to be removed in Gradle 5.0.
        at build_29krsyfke8ucv8x0as9l09y6s.run(/Users/jason/src/elastic/elasticsearch/plugins/repository-hdfs/build.gradle:109)
        (Run with --stacktrace to get the full stack trace of this deprecation warning.)

that are emitted during configuration.

[rjernst]

LGTM