go: include vendored modules

RHEL requires the source code for dependencies to be included in the
srpm. The spec file already expects that, but we've only included the
vendored modules (i.e., the `vendor` directory) in the `rhel-8.2.`
branch. Move vendoring to master, so that we can build RHEL packages
from it as well.

This commit is the result of running `go mod vendor`, which includes the
vendored sources and updates go.mod and go.sum files.

Fedora requires the opposite: dependencies should not be vendored. The
spec file already ignores the `vendor` directory by default.

vendor/github.com/aws/aws-sdk-go/internal/ini/statement.go

@@ -0,0 +1,35 @@
+package ini
+
+// Statement is an empty AST mostly used for transitioning states.
+func newStatement() AST {
+	return newAST(ASTKindStatement, AST{})
+}
+
+// SectionStatement represents a section AST
+func newSectionStatement(tok Token) AST {
+	return newASTWithRootToken(ASTKindSectionStatement, tok)
+}
+
+// ExprStatement represents a completed expression AST
+func newExprStatement(ast AST) AST {
+	return newAST(ASTKindExprStatement, ast)
+}
+
+// CommentStatement represents a comment in the ini definition.
+//
+//	grammar:
+//	comment -> #comment' | ;comment'
+//	comment' -> epsilon | value
+func newCommentStatement(tok Token) AST {
+	return newAST(ASTKindCommentStatement, newExpression(tok))
+}
+
+// CompletedSectionStatement represents a completed section
+func newCompletedSectionStatement(ast AST) AST {
+	return newAST(ASTKindCompletedSectionStatement, ast)
+}
+
+// SkipStatement is used to skip whole statements
+func newSkipStatement(ast AST) AST {
+	return newAST(ASTKindSkipStatement, ast)
+}