String version the address used for loading configuration
selector - address /foo/bar matches /foo/bar but not /foo/bar/baz /foo/ * matches foo/bar and foo/bar/baz /foo/ * /baz matches foo/bar/baz but not foo/bar
selector - address /foo/bar matches /foo/bar but not /foo/bar/baz /foo/ * matches foo/bar and foo/bar/baz /foo/ * /baz matches foo/bar/baz but not foo/bar
PS: This is not commutative
MetricAddress the address being checked