add conditional for https redirects and use hosts instead of wildcard

Closes #39 (closed)

Closes #49 (closed)

These changes add in logic to use the servers.hosts entries in the auto-generated http->https redirect blocks instead of the global-matching "*"

In addition, the auto-generated redirect blocks can be enabled or disabled by redirectHttpToHttps.enabled value. If redirectHttpToHttps is not defined, the default is to generate the block.

The values file:

The generated Gateway definition:

chart/templates/gateway.yaml

@@ -13,13 +13,21 @@ spec:
   selector:
     {{- $values.selector | default (dict) | toYaml | nindent 4 }}
   servers:
+{{- if (dig "autoHttpRedirect" "enabled" true $values) }}    
   - hosts:
-    - "*"
+{{- range $servers := $values.servers }}
+{{- range $host := $servers.hosts }}
+{{- if eq $servers.port.protocol "HTTPS" }}
+    - '{{- tpl $host $ }}'
+{{- end }}    
+{{- end }}
+{{- end }}
     port:
       name: http
       number: 8080
       protocol: HTTP
     tls:
       httpsRedirect: true
+{{- end }}
     {{- tpl (toYaml $values.servers) $ | nindent 2 }}
 {{- end }}
\ No newline at end of file