IDEX-2831: Uncomment che-plugin-sdk-tools for installation 3-part extenstions
IDEX-2831: Uncomment che-plugin-sdk-tools for installation 3-part extenstions

ollie314/che-plugins,ollie314/che-plugins,ollie314/che-plugins,codenvy/che-plugins,ollie314/che-plugins,codenvy/che-plugins,codenvy/che-plugins