ensure basic templates are present for version bump

1. add templates/nuxeo.defaults
2. ensure the version matches the current HF (see org.nuxeo.ecm.product.version property)
3. add tomcat.version=7.0.64 missing line to templates/nuxeo.defaults (7.10 specific value)
4. add the template directive to the install.xml file:

   <copy overwrite="true" file="${package.root}/templates" todir="${env.server.home}" />
   

   (should be modified from 8.0 and later as copy directive is not welcome anymore) -> check with NOS team

Tomcat version is actually:

1. 7.0.56 for 6.0
2. 7.0.64 for 7.10
3. 7.0.69 for 8.10

Nuxeo version is contained in nuxeo.defaults and common/nuxeo.defaults in 6.0.
in LTS 2015 and LTS 2016T it is only in nuxeo.defaults.