Update and extend schacHomeOrganizationType default values

[trsau]

The current values have terena.org embedded in the values. This domain no longer exists so should be removed from exiting values. In addition other values could be added to the list. The following list could be used as a starting point based on what is happening internationally.

Existing values map to these.

urn:schac:homeOrganizationType:au:university
urn:schac:homeOrganizationType:au:research-institution
urn:schac:homeOrganizationType:au:other

Possible new values.

urn:schac:homeOrganizationType:au:health-research-institution
urn:schac:homeOrganizationType:au:supercomputing-centre
urn:schac:homeOrganizationType:au:library
urn:schac:homeOrganizationType:au:museum
urn:schac:homeOrganizationType:au:nren

Others may also be added.