move shibboleth related files to config/shibboleth, use source image directly

config/shibboleth/attribute-map.xml

config/shibboleth/dem_pass-ac.xml

config/shibboleth/emg_pass-ac.xml

config/shibboleth/index.html

config/shibboleth/native.logger

config/shibboleth/shib-apache.conf

config/shibboleth/shibboleth2.xml

config/shibboleth/shibd.logger

config/shibboleth/vhr18_pass-ac.xml

docker-compose.dem.ops.yml

docker-compose.emg.ops.yml

docker-compose.vhr18.ops.yml

shibauth/Dockerfile

shibauth/shibboleth-conf/idp-metadata-esa-test.xml

shibauth/shibboleth-conf/idp-metadata_samltest.xml

shibauth/shibboleth-conf/sp-metadata.xml