HBASE-21074 JDK7 builds need to be done with TLSv1.2.

* for master and branches-2 we skip the jdk7 stuff

Signed-off-by: Michael Stack <stack@apache.org>

dev-support/hbase-personality.sh

@@ -115,6 +115,9 @@ function personality_modules
   clear_personality_queue
 
   extra="-DHBasePatchProcess"
+  if [[ "${PATCH_BRANCH}" = branch-1* ]]; then
+    extra="${extra} -Dhttps.protocols=TLSv1.2"
+  fi
 
   if [[ -n "${HADOOP_PROFILE}" ]]; then
     extra="${extra} -Dhadoop.profile=${HADOOP_PROFILE}"

src/main/asciidoc/_chapters/developer.adoc

@@ -482,7 +482,7 @@ mvn -DskipTests package assembly:single deploy
 
 [[build.gotchas]]
 ==== Build Gotchas
-
+===== Maven Site failure
 If you see `Unable to find resource 'VM_global_library.vm'`, ignore it.
 It's not an error.
 It is link:https://issues.apache.org/jira/browse/MSITE-286[officially ugly] though.