Stop auto-generating entity IDs

docs/simplesamlphp-artifact-idp.md

docs/simplesamlphp-authproc.md

docs/simplesamlphp-customauth.md

docs/simplesamlphp-ecp-idp.md

docs/simplesamlphp-googleapps.md

docs/simplesamlphp-hok-idp.md

docs/simplesamlphp-idp.md

docs/simplesamlphp-metadata-extensions-rpi.md

docs/simplesamlphp-modules.md

docs/simplesamlphp-reference-idp-hosted.md

metadata-templates/saml20-idp-hosted.php

modules/core/docs/authproc_targetedid.md

modules/saml/docs/keyrollover.md

src/SimpleSAML/Metadata/MetaDataStorageHandlerPdo.php

src/SimpleSAML/Metadata/MetaDataStorageSource.php