Make echo liveness probe available under /actuator/health for resources

- implement spring's HealthIndicator interface to provide health probe based on AaiGraphChecker
- conditionally enable the probe when aai.actuator.echo.enabled=true
- increase snapshot version to 1.15.6-SNAPSHOT

Issue-ID: AAI-3959
Change-Id: Ie2b49ad1f3145285be844bb11aa8119a16fb68c9
Signed-off-by: Fiete Ostkamp <Fiete.Ostkamp@telekom.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/version.properties b/version.properties
index 82f9610..cae43c2 100644
--- a/version.properties
+++ b/version.properties
@@ -5,7 +5,7 @@
 
 major_version=1
 minor_version=14
-patch_version=4
+patch_version=6
 
 base_version=${major_version}.${minor_version}.${patch_version}