Update main.tf

Add Github and Gitlab when using git@ URLs.

git-clone/main.tf

@@ -34,9 +34,15 @@ variable "git_providers" {
     "https://github.com/" = {
       provider = "github"
     },
+    "git@github.com:" = {
+      provider = "github"
+    },
     "https://gitlab.com/" = {
       provider = "gitlab"
     },
+    "git@gitlab.com:" = {
+      provider = "gitlab"
+    },
   }
   validation {
     error_message = "Allowed values for provider are \"github\" or \"gitlab\"."