Linkerd - edge-22.3.5

edge-22.3.5

This edge release introduces new policy CRDs that allow for more generalized
authorization policies.

The AuthorizationPolicy CRD authorizes clients that satisfy all the required
authentications to communicate with the Linkerd Server that it targets.
Required authentications are specified through the new MeshTLSAuthentication
and NetworkAuthentication CRDs.

A MeshTLSAuthentication defines a list of authenticated client IDs—specified
directly by proxy identity strings or referencing resources such as
ServiceAccounts.

A NetworkAuthentication defines a list of client networks that will be
authenticated.

Additionally, to support the new CRDs, policy-related labels have been changed
to better categorize policy metrics. A srv_kind label has been introduced
which splits the current srv_name value—formatted as kind:name—into separate
labels. The saz_name label has been removed and is replaced by the new
authz_kind and authz_name labels.

• Introduced the srv_kind label which allowed splitting the value of the
  current srv_name label
• Removed the saz_name label and replaced it with the new authz_kind and
  authz_name labels
• Fixed an issue in the destination controller where an update would not be sent
  after an endpoint was discovered for a currently empty service
• Introduced the following custom resource types to support generalized
  authorization policies: AuthorizationPolicy, MeshTLSAuthentication,
  NetworkAuthentication
• Deprecated the --proxy-version flag (thanks @importhuman!)
• Updated linkerd-viz to use new policy CRDs