Introduce provider

src/recipe/os/YUM/AlmaLinux.c

@@ -12,7 +12,7 @@
  */
 static SourceInfo
 os_almalinux_sources[] = {
-  {&Upstream,      "http://repo.almalinux.org/almalinux"},
+  {&UpstreamProvider,      "http://repo.almalinux.org/almalinux"},
   {&Ali,           "https://mirrors.aliyun.com/almalinux"},
   {&Volcengine,    "https://mirrors.volces.com/almalinux"},
   {&Sjtug_Zhiyuan, "https://mirrors.sjtug.sjtu.edu.cn/almalinux"},

src/recipe/os/YUM/Anolis-OS.c

@@ -14,7 +14,7 @@
  */
 static SourceInfo
 os_anolis_sources[] = {
-  {&Upstream,       NULL},
+  {&UpstreamProvider,       NULL},
   {&Ali,            "https://mirrors.aliyun.com/anolis"},
   {&Hust,           "https://mirrors.hust.edu.cn/anolis"}
 };

src/recipe/os/YUM/Fedora-Linux.c

@@ -16,7 +16,7 @@
  */
 static SourceInfo
 os_fedora_sources[] = {
-  {&Upstream,      "http://download.example/pub/fedora/linux"},
+  {&UpstreamProvider,      "http://download.example/pub/fedora/linux"},
   {&Ali,           "https://mirrors.aliyun.com/fedora"},
   {&Bfsu,          "https://mirrors.bfsu.edu.cn/fedora"},
   {&Ustc,          "https://mirrors.ustc.edu.cn/fedora"},

src/recipe/os/YUM/Rocky-Linux.c

@@ -12,7 +12,7 @@
  */
 static SourceInfo
 os_rockylinux_sources[] = {
-  {&Upstream,        NULL},
+  {&UpstreamProvider,        NULL},
   {&MirrorZ,        "https://mirrors.cernet.edu.cn/rocky"},
   {&Ali,            "https://mirrors.aliyun.com/rockylinux"},
   {&Volcengine,     "https://mirrors.volces.com/rockylinux"},

src/recipe/os/YUM/openEuler.c

@@ -13,7 +13,7 @@
  */
 static SourceInfo
 os_openeuler_sources[] = {
-  {&Upstream,       "https://repo.openeuler.org/"},
+  {&UpstreamProvider,       "https://repo.openeuler.org/"},
   {&Ali,            "https://mirrors.aliyun.com/openeuler/"},
   {&Bfsu,           "https://mirrors.bfsu.edu.cn/openeuler/"},
   {&Ustc,           "https://mirrors.ustc.edu.cn/openeuler/"},