Fix sftp performances and add seaweedfs all-in-one deployment (#6792)

* improve perfs & fix rclone & refactoring
Signed-off-by: Mohamed Sekour <mohamed.sekour@exfo.com>

* improve perfs on download + add seaweedfs all-in-one deployment

Signed-off-by: Mohamed Sekour <mohamed.sekour@exfo.com>

* use helper for topologySpreadConstraints and fix create home dir of sftp users

Signed-off-by: Mohamed Sekour <mohamed.sekour@exfo.com>

* fix helm lint

Signed-off-by: Mohamed Sekour <mohamed.sekour@exfo.com>

* add missing ctx param

Signed-off-by: Mohamed Sekour <mohamed.sekour@exfo.com>

---------

Signed-off-by: Mohamed Sekour <mohamed.sekour@exfo.com>

weed/sftpd/utils/lru_cache.go

@@ -0,0 +1,52 @@
+package utils
+
+import (
+	"container/list"
+)
+
+type CacheEntry struct {
+	key   int64
+	value []byte
+}
+
+type LruCache struct {
+	capacity int
+	ll       *list.List
+	cache    map[int64]*list.Element
+}
+
+func NewLRUCache(capacity int) *LruCache {
+	return &LruCache{
+		capacity: capacity,
+		ll:       list.New(),
+		cache:    make(map[int64]*list.Element),
+	}
+}
+
+func (c *LruCache) Get(key int64) ([]byte, bool) {
+	if ele, ok := c.cache[key]; ok {
+		c.ll.MoveToFront(ele)
+		return ele.Value.(*CacheEntry).value, true
+	}
+	return nil, false
+}
+
+func (c *LruCache) Put(key int64, value []byte) {
+	if ele, ok := c.cache[key]; ok {
+		c.ll.MoveToFront(ele)
+		ele.Value.(*CacheEntry).value = value
+		return
+	}
+
+	if c.ll.Len() >= c.capacity {
+		oldest := c.ll.Back()
+		if oldest != nil {
+			c.ll.Remove(oldest)
+			delete(c.cache, oldest.Value.(*CacheEntry).key)
+		}
+	}
+
+	entry := &CacheEntry{key, value}
+	ele := c.ll.PushFront(entry)
+	c.cache[key] = ele
+}