add optional db connection pool support

Author: arturmkr

gateway-ha/pom.xml

@@ -104,6 +104,12 @@
             </exclusions>
         </dependency>
 
+        <dependency>
+            <groupId>com.zaxxer</groupId>
+            <artifactId>HikariCP</artifactId>
+            <version>7.0.2</version>
+        </dependency>
+
         <dependency>
             <groupId>io.airlift</groupId>
             <artifactId>aircompressor-v3</artifactId>
@@ -318,12 +324,6 @@
             <scope>runtime</scope>
         </dependency>
 
-        <dependency>
-            <groupId>com.zaxxer</groupId>
-            <artifactId>HikariCP</artifactId>
-            <version>7.0.2</version>
-        </dependency>
-
         <!-- Test deps -->
         <dependency>
             <groupId>com.h2database</groupId>