Update docker tag convention

Update docker tagging convention to use:
v0.17.0-SNAPSHOT-YYYYMMDDTHHMMSSZ (for dev images)
v0.17.0-STAGING-YYYYMMDDTHHMMSSZ (for staging images)

Change-Id: Ie874a49bb884e38ecd1371d8e24c1a34d37b3d2e
Issue-ID: CIMAN-132
Signed-off-by: Jessica Wagantall <jwagantall@linuxfoundation.org>
diff --git a/pom.xml b/pom.xml
index 348ffcc..9c8ab1f 100644
--- a/pom.xml
+++ b/pom.xml
@@ -113,7 +113,7 @@
 		<sitePath>/content/sites/site/org/openecomp/sdc/${project.version}</sitePath>
 		<staging.profile.id>176c31dfe190a</staging.profile.id>
 		<!--maven-->
-		<maven.build.timestamp.format>yyyyMMdd'T'HHmm</maven.build.timestamp.format>
+		<maven.build.timestamp.format>yyyyMMdd'T'HHmmss'Z'</maven.build.timestamp.format>
 		<!--io.fabric8-->
 		<fabric8.version>0.23.0</fabric8.version>
 		<!--docker tags-->