IMPALA-10262: RPM/DEB Packaging Support

This patch bases on a previous patch contributed by Shant Hovsepian:
https://gerrit.cloudera.org/c/16612/

It adds a new option, -package, to buildall.sh for building a package
for the current OS type (e.g. CentOS/Ubuntu). You can also use
"make/ninja package" to build the package. Scripts for launching the
services and the required configuration files are also added.

Tests:
 - Built on Ubuntu 18.04/20.04 and CentOS 7 using
   ./buildall.sh -noclean -skiptests -release -package
 - Deployed the RPM package on a CDP cluster. Verifed the scripts.
 - Deployed the DEB package on a docker container. Verified the scripts.

Change-Id: I64419fd400fe8d233dac016b6306157fe9461d82
Reviewed-on: http://gerrit.cloudera.org:8080/18939
Reviewed-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

buildall.sh

@@ -69,6 +69,7 @@ BUILD_ASAN=0
 BUILD_FE_ONLY=0
 BUILD_TESTS=1
 GEN_CMAKE_ONLY=0
+GEN_PACKAGE=0
 BUILD_RELEASE_AND_DEBUG=0
 BUILD_TIDY=0
 BUILD_UBSAN=0
@@ -204,6 +205,9 @@ do
     -cmake_only)
       GEN_CMAKE_ONLY=1
       ;;
+    -package)
+      GEN_PACKAGE=1
+      ;;
     -help|*)
       echo "buildall.sh - Builds Impala and runs all tests."
       echo "[-noclean] : Omits cleaning all packages before building. Will not kill"\
@@ -258,6 +262,7 @@ do
       echo "[-fe_only] : Build just the frontend"
       echo "[-ninja] : Use ninja instead of make"
       echo "[-cmake_only] : Generate makefiles only, instead of doing a full build"
+      echo "[-package] : Generate a package for deployment."
       echo "-----------------------------------------------------------------------------
 Examples of common tasks:
 
@@ -537,6 +542,9 @@ generate_cmake_files() {
     echo "CACHELINESIZE_AARCH64:$CACHELINESIZE_AARCH64"
     CMAKE_ARGS+=(-DCACHELINESIZE_AARCH64=$CACHELINESIZE_AARCH64)
   fi
+  if [[ "$GEN_PACKAGE" -eq 1 ]]; then
+    CMAKE_ARGS+=(-DBUILD_PACKAGES=ON)
+  fi
 
   cmake . ${CMAKE_ARGS[@]}
 }
@@ -660,6 +668,10 @@ else
   build_all_components $CMAKE_BUILD_TYPE 1
 fi
 
+if [[ "$GEN_PACKAGE" -eq 1 ]]; then
+  ${MAKE_CMD} -j${IMPALA_BUILD_THREADS:-4} package
+fi
+
 if [[ $NEED_MINICLUSTER -eq 1 ]]; then
   reconfigure_test_cluster
 fi