foreman_server.sh fails with error "Parameter name failed on Mysql_user[@]: Invalid database use"

Issue

Error when running the foreman_server.sh

...
Error: Parameter name failed on Mysql_user[@]: Invalid database user @ at /usr/share/foreman-installer/modules/mysql/manifests/server/account_security.pp:13
sed: can't read /etc/sysconfig/dhcpd: No such file or directory
dhcpd: unrecognized service
/usr/share/openstack-foreman-installer/bin
rake aborted!
Please install the sqlite3 adapter: `gem install activerecord-sqlite3-adapter` (Could not find sqlite3 (~> 1.3.5) amongst [actionmailer-3.2.8, actionpack-3.2.8, activemodel-3.2.8, activerecord-3.2.8, activeresource-3.2.8, activesupport-3.2.8, ancestry-2.0.0, apipie-rails-0.0.23, arel-3.0.2, audited-3.0.0, audited-activerecord-3.0.0, bigdecimal-1.1.0, builder-3.0.0, bundler-1.1.4, bundler_ext-0.3.0, coffee-rails-3.2.2, coffee-script-2.2.0, coffee-script-source-1.3.3, daemons-1.1.4, diff-lcs-1.1.3, erubis-2.7.0, eventmachine-0.12.10, execjs-1.4.0, fast_gettext-0.8.0, foreigner-1.4.2, gettext_i18n_rails-0.10.0, gettext_i18n_rails_js-0.0.8, hike-1.2.1, i18n-0.6.0, i18n_data-0.2.7, io-console-0.3, journey-1.0.4, jquery-rails-2.0.2, jquery-ui-rails-4.0.2, json-1.5.5, mail-2.4.4, mime-types-1.19, multi_json-1.3.6, mysql-2.8.1, net-http-persistent-2.7, net-ldap-0.3.1, oauth-0.4.7, po_to_json-0.0.7, polyglot-0.3.3, rabl-0.7.6, rack-1.4.1, rack-cache-1.2, rack-ssl-1.3.2, rack-test-0.6.1, rails-3.2.8, railties-3.2.8, rake-0.9.2.2, rdoc-3.12, ref-1.0.0, rest-client-1.6.1, ruby2ruby-2.0.1, ruby_parser-3.1.1, safemode-1.2.0, sass-3.1.20, sass-rails-3.2.5, scoped_search-2.5.1, sexp_processor-4.1.3, sprockets-2.4.5, therubyracer-0.11.0beta8, thin-1.3.1, thor-0.15.4, tilt-1.3.3, treetop-1.4.10, twitter-bootstrap-rails-2.2.6, tzinfo-0.3.33, uglifier-1.2.6, uuidtools-2.1.3, will_paginate-3.0.2])

Tasks: TOP => puppet:import:puppet_classes => environment
(See full trace by running task with --trace)
rake aborted!
Please install the sqlite3 adapter: `gem install activerecord-sqlite3-adapter` (Could not find sqlite3 (~> 1.3.5) amongst [actionmailer-3.2.8, actionpack-3.2.8, activemodel-3.2.8, activerecord-3.2.8, activeresource-3.2.8, activesupport-3.2.8, ancestry-2.0.0, apipie-rails-0.0.23, arel-3.0.2, audited-3.0.0, audited-activerecord-3.0.0, bigdecimal-1.1.0, builder-3.0.0, bundler-1.1.4, bundler_ext-0.3.0, coffee-rails-3.2.2, coffee-script-2.2.0, coffee-script-source-1.3.3, daemons-1.1.4, diff-lcs-1.1.3, erubis-2.7.0, eventmachine-0.12.10, execjs-1.4.0, fast_gettext-0.8.0, foreigner-1.4.2, gettext_i18n_rails-0.10.0, gettext_i18n_rails_js-0.0.8, hike-1.2.1, i18n-0.6.0, i18n_data-0.2.7, io-console-0.3, journey-1.0.4, jquery-rails-2.0.2, jquery-ui-rails-4.0.2, json-1.5.5, mail-2.4.4, mime-types-1.19, multi_json-1.3.6, mysql-2.8.1, net-http-persistent-2.7, net-ldap-0.3.1, oauth-0.4.7, po_to_json-0.0.7, polyglot-0.3.3, rabl-0.7.6, rack-1.4.1, rack-cache-1.2, rack-ssl-1.3.2, rack-test-0.6.1, rails-3.2.8, railties-3.2.8, rake-0.9.2.2, rdoc-3.12, ref-1.0.0, rest-client-1.6.1, ruby2ruby-2.0.1, ruby_parser-3.1.1, safemode-1.2.0, sass-3.1.20, sass-rails-3.2.5, scoped_search-2.5.1, sexp_processor-4.1.3, sprockets-2.4.5, therubyracer-0.11.0beta8, thin-1.3.1, thor-0.15.4, tilt-1.3.3, treetop-1.4.10, twitter-bootstrap-rails-2.2.6, tzinfo-0.3.33, uglifier-1.2.6, uuidtools-2.1.3, will_paginate-3.0.2])

Tasks: TOP => db:abort_if_pending_migrations => environment
(See full trace by running task with --trace)