Allow both decimal and floating point numbers in metrics assertion pattern (#1939)

Author: questras

integration-tests/src/common/java/pl/allegro/tech/hermes/integrationtests/assertions/PrometheusMetricsAssertion.java

@@ -9,7 +9,7 @@
 public class PrometheusMetricsAssertion {
 
   private static final Pattern METRIC_LINE_PATTERN =
-      Pattern.compile("^[a-z_]+\\{(.*)\\} (\\d+\\.\\d+)$");
+      Pattern.compile("^[a-z_]+\\{(.*)\\} (\\d+(\\.\\d+)?)$");
 
   private final String actualBody;