Remove the aagui container

[oharsta]

The GUI application of Attribute Aggregator has been removed, but the aagui container still runs. The apache configuration of aagui handles the mapping of the internal/health and internal/info endpoints:

ProxyPass /internal/health http://aaserver:8080/aa/api/internal/health retry=0
ProxyPass /internal/info http://aaserver:8080/aa/api/internal/info retry=0

ProxyPass /aa/api http://aaserver:8080/aa/api retry=0
ProxyPassReverse /aa/api http://aaserver:8080/aa/api

This is needed because the AA server runs with context path /aa/api. We can't change that easily as this requires a change in the EB configuration. We want to be able to remove the aa-gui, and therefore the health endpoint of AA in the HAproxy must be changed.

[oharsta]

See also OpenConext/OpenConext-attribute-aggregation#133