[dev] start moving input validators to lib/

lib/refrepo/valid/data/homogeneity.yaml.erb

lib/refrepo/valid/homogeneity.rb

lib/refrepo/valid/input/check-monitoring-properties.rb

lib/refrepo/valid/input/check-network-description.rb

lib/refrepo/valid/input/lib/array_validator.rb

lib/refrepo/valid/input/lib/custom_validators.rb

lib/refrepo/valid/input/lib/multihash_validator.rb

lib/refrepo/valid/input/lib/schema_validator.rb

lib/refrepo/valid/input/schema-cluster.yaml

lib/refrepo/valid/input/schema-global.yaml

lib/refrepo/valid/input/schema-network_equipments.yaml

lib/refrepo/valid/input/schema-node.yaml

lib/refrepo/valid/input/schema-site.yaml

lib/refrepo/valid/input/yaml-input-find-duplicates.rb

lib/refrepo/valid/input/yaml-input-schema-validator.rb