[maven-release-plugin] copy for tag camel-2.21.1

[maven-release-plugin] copy for tag camel-2.20.3

[maven-release-plugin] copy for tag camel-2.19.5

[maven-release-plugin] copy for tag camel-2.21.0

[maven-release-plugin] copy for tag camel-2.20.2

[maven-release-plugin] copy for tag camel-2.20.1

[maven-release-plugin] copy for tag camel-2.19.4

[maven-release-plugin] copy for tag camel-2.20.0

[maven-release-plugin] copy for tag camel-2.18.5

[maven-release-plugin] copy for tag camel-2.19.3