Add requirements to docker host and k8s cluster

Since now, all flavors that have less than 10 GB disk will
not be added to the possible selection.

Also, unnecessary backslashes were removed.

Change-Id: I0839a4252957acd2be9dddbd335674c22c3d57a5

DockerStandaloneHost/package/UI/ui.yaml

@@ -53,6 +53,10 @@ Forms:
             Select registered in Openstack flavor. Consider that application performance
             depends on this parameter.
           required: false
+          requirements:
+            min_disk: 10
+            min_memory_mb: 1024
+            min_vcpus: 1
         - name: keyPair
           type: keypair
           label: Key Pair

Kubernetes/KubernetesCluster/package/UI/ui.yaml

@@ -86,8 +86,8 @@ Forms:
           required: false
         - name: unitNamingPattern
           type: string
-          initial: 'kube-#'
-          helpText: \'#\' expands to machine sequence number
+          initial: kube-#
+          helpText: "# expands to machine sequence number"
           required: false
           description: >-
             For your convenience instance hostname can be specified.
@@ -132,7 +132,7 @@ Forms:
           required: false
           regexpValidator: '^(([a-zA-Z0-9#][a-zA-Z0-9-#]*[a-zA-Z0-9#])\.)*([A-Za-z0-9#]|[A-Za-z0-9#][A-Za-z0-9-#]*[A-Za-z0-9#])$'
           label: Gateway hostname pattern
-          helpText: \'#\' expands to gateway sequence number
+          helpText: "# expands to gateway sequence number"
           description: >-
              Check to assign floating IP to gateway nodes
         - name: dockerRegistry
@@ -157,6 +157,11 @@ Forms:
             Select one of the existing flavors. Consider that application performance
             depends on this parameter.
           required: false
+          requirements:
+            min_disk: 10
+            min_memory_mb: 1024
+            min_vcpus: 1
+
         - name: keyPair
           type: keypair
           label: Key Pair