CI: match RPM version string to JNI Adapter

When creating the RPM package we should use the version of the JNI
Adapter itself to version the package. It was using libpEpAdapter
version which was incorrect.

scripts/centos8/Makefile

@@ -67,7 +67,7 @@ rpm:
 	@docker push $(PKG_BUILD_IMAGE)-jniadapter:$(PEPJNIADAPTER_VERSION)
 	@docker push $(PKG_BUILD_IMAGE)-jniadapter:latest
 	@docker run -e PEPJNIADAPTER_VERSION=$(PEPJNIADAPTER_VERSION) \
-		-e PKG_VERSION=$(LIBPEPADAPTER_VERSION) \
+		-e PKG_VERSION=$(PEPJNIADAPTER_VERSION) \
 		-e PKG_INSTALL_PATH=$(PKG_INSTALL_PATH) \
 		-e PKG_NAME=$(PKG_NAME) \
 		-e PKG_DESCRIPTION=$(PKG_DESCRIPTION) \