fix cpu resource validation (zalando#757)

Author: FxKu

charts/postgres-operator/crds/postgresqls.yaml

@@ -222,7 +222,7 @@ spec:
                       # only the format of the given number.
                       #
                       # https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/#meaning-of-cpu
-                      pattern: '^(\d+m|\d+\.\d{1,3})$'
+                      pattern: '^(\d+m|\d+(\.\d{1,3})?)$'
                       # Note: the value specified here must not be zero or be lower
                       # than the corresponding request.
                     memory:
@@ -253,7 +253,7 @@ spec:
                       # only the format of the given number.
                       #
                       # https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/#meaning-of-cpu
-                      pattern: '^(\d+m|\d+\.\d{1,3})$'
+                      pattern: '^(\d+m|\d+(\.\d{1,3})?)$'
                       # Note: the value specified here must not be zero or be higher
                       # than the corresponding limit.
                     memory:

manifests/postgresql.crd.yaml

@@ -186,7 +186,7 @@ spec:
                       # only the format of the given number.
                       #
                       # https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/#meaning-of-cpu
-                      pattern: '^(\d+m|\d+\.\d{1,3})$'
+                      pattern: '^(\d+m|\d+(\.\d{1,3})?)$'
                       # Note: the value specified here must not be zero or be lower
                       # than the corresponding request.
                     memory:
@@ -217,7 +217,7 @@ spec:
                       # only the format of the given number.
                       #
                       # https://kubernetes.io/docs/concepts/configuration/manage-compute-resources-container/#meaning-of-cpu
-                      pattern: '^(\d+m|\d+\.\d{1,3})$'
+                      pattern: '^(\d+m|\d+(\.\d{1,3})?)$'
                       # Note: the value specified here must not be zero or be higher
                       # than the corresponding limit.
                     memory:

pkg/apis/acid.zalan.do/v1/crds.go

@@ -356,7 +356,7 @@ var PostgresCRDResourceValidation = apiextv1beta1.CustomResourceValidation{
 									"cpu": {
 										Type:        "string",
 										Description: "Decimal natural followed by m, or decimal natural followed by dot followed by up to three decimal digits (precision used by Kubernetes). Must be greater than 0",
-										Pattern:     "^(\\d+m|\\d+\\.\\d{1,3})$",
+										Pattern:     "^(\\d+m|\\d+(\\.\\d{1,3})?)$",
 									},
 									"memory": {
 										Type:        "string",
@@ -372,7 +372,7 @@ var PostgresCRDResourceValidation = apiextv1beta1.CustomResourceValidation{
 									"cpu": {
 										Type:        "string",
 										Description: "Decimal natural followed by m, or decimal natural followed by dot followed by up to three decimal digits (precision used by Kubernetes). Must be greater than 0",
-										Pattern:     "^(\\d+m|\\d+\\.\\d{1,3})$",
+										Pattern:     "^(\\d+m|\\d+(\\.\\d{1,3})?)$",
 									},
 									"memory": {
 										Type:        "string",