Symbol list leaks into other packages

[michaelblyons]

Because there is no source.terraform or .terraform suffix, the indexing rule leaks out into other packages.

Terraform/Symbols - Indexed.tmPreferences

Lines 7 to 15 in 588c551

	<key>scope</key>
	<string>
	entity.name.label
	</string>
	<key>settings</key>
	<dict>
	<key>showInIndexedSymbolList</key>
	<integer>1</integer>
	</dict>

It's failing a syntax test in another package without partial-symbols.