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

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}"

dev-support/hbase_nightly_source-artifact.sh

@@ -161,7 +161,8 @@ fi
 
 cd "${unpack_dir}"
 echo "Follow the ref guide section on making a RC: Step 8 Build the binary tarball."
-if mvn -DskipTests -Prelease --batch-mode -Dmaven.repo.local="${m2_tarbuild}" clean install \
+# N.B. Older JDK7 requires the TLSv1.2 in order to talk to maven central
+if mvn -Dhttps.protocols=TLSv1.2 -DskipTests -Prelease --batch-mode -Dmaven.repo.local="${m2_tarbuild}" clean install \
     assembly:single >"${working_dir}/srctarball_install.log" 2>&1; then
   echo "Building a binary tarball from the source tarball succeeded."
 else

src/main/asciidoc/_chapters/developer.adoc

@@ -472,7 +472,11 @@ mvn -DskipTests package assembly:single deploy
 
 [[build.gotchas]]
 ==== Build Gotchas
+===== Failure to find dependencies with "protocol_version" error
 
+Many maven repositories, most notably Maven Central, now require TLSv1.2 for HTTPS connections. On older JDK7 instances you may need to manually add +-Dhttps.protocols=TLSv1.2+ to your Maven command line invocation.
+
+===== 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.