Fix error, support other remotes

- `table.unpack` -> `unpack`
- Add support for `http://` and `ssh://` remotes
- Gracefully handle error while parsing

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+Fix issue with error, support other remotes
+
+- `table.unpack` -> `unpack`
+- Add support for `http://` and `ssh://` remotes
+- Gracefully handle error while parsing
+# Please enter the commit message for your changes. Lines starting
+# with '#' will be ignored, and an empty message aborts the commit.
+#
+# On branch vik/add_ghe_support
+# Your branch is up to date with 'origin/vik/add_ghe_support'.
+#
+# Changes to be committed:
+#	modified:   lua/openingh/init.lua
+#	modified:   lua/openingh/utils.lua
+#