### What needs to get done The LifecycleManager needs to parse and validate namespaced partitions. Namespaces can only contain lowercase alphabetical characters. Namespaced partitions can contain lowercase alphabetical characters and hyphens. They cannot start or end with a hyphen. A new error will inform the user of invalid namespaced partitions. This means a single regex check will not be sufficient. #### Existing error - invalid partition This error already exists: ``` Partition 'test!' must only contain lowercase letters. ``` #### New error - invalid namespaced partition This error occurs when a namespaced partitions contains invalid characters. ``` Namespaced partition 'test!/foo' is invalid. Namespaced partitions are formatted as `<namespace>/<partition>`. Namespaces must only contain lowercase letters. Nmespaced partitions must only contain lowercase letters and hyphens and cannot start or end with a hyphen. ``` Unit tests only, no integration tests will be written for this task. ### Why it needs to get done To support components in snapcraft