Fix flowconfig in starter project

Summary:
In the .flowconfig in the starter project, we're missing the correct suppression comments.

This should fix the flow issues in the e2e tests.
Closes https://github.com/facebook/react-native/pull/12533

Differential Revision: D4603657

Pulled By: ericvicenti

fbshipit-source-id: a07ec947d3ba746279c58e2d95c2293f54e06933

local-cli/templates/HelloWorld/_flowconfig

@@ -36,9 +36,10 @@ suppress_type=$FlowIssue
 suppress_type=$FlowFixMe
 suppress_type=$FixMe
 
-suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(>=0\\.\\(3[0-9]\\|[1-2][0-9]\\|[0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)
-suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(>=0\\.\\(3[0-9]\\|1[0-9]\\|[1-2][0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)?:? #[0-9]+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(>=0\\.\\(3[0-9]\\|[1-2][0-9]\\|[0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*\\(react_native_oss\\|react-native\\)[a-z,_]*\\)?)\\)
+suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(>=0\\.\\(3[0-9]\\|1[0-9]\\|[1-2][0-9]\\).[0-9]\\)? *\\(site=[a-z,_]*\\(react_native_oss\\|react-native\\)[a-z,_]*\\)?)\\)?:? #[0-9]+
 suppress_comment=\\(.\\|\n\\)*\\$FlowFixedInNextDeploy
+suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
 
 unsafe.enable_getters_and_setters=true