Update Hadoop and ZooKeeper versions (#282)

* Change default Hadoop version to 3.3.3
* Change default ZooKeeper version to 3.7.1
* Replace Hadoop and ZooKeeper checksums with latest patch release for
  each minor release line
diff --git a/conf/checksums b/conf/checksums
index da07fa8..10d8080 100644
--- a/conf/checksums
+++ b/conf/checksums
@@ -1,7 +1,7 @@
 accumulo:2.0.1:b443839443a9f5098b55bc5c54be10c11fedbaea554ee6cd42eaa9311068c70bd611d7fc67698c91ec73da0e85b9907aa72b98d5eb4d49ea3a5d51b0c6c5785f
 accumulo:1.10.2:9b6e9286133120588f4c682e3fadee33704cf5983ef7e3c0be84c1678bd9bcf283a2c6efa6d4074c73f30032f5c0aa1073c15ec39f90d215505e028a1cf0a739
-hadoop:3.3.0:9ac5a5a8d29de4d2edfb5e554c178b04863375c5644d6fea1f6464ab4a7e22a50a6c43253ea348edbd114fc534dcde5bdd2826007e24b2a6b0ce0d704c5b4f5b
-hadoop:3.2.2:054753301927d31a69b80be3e754fd330312f0b1047bcfa4ab978cdce18319ed912983e6022744d8f0c8765b98c87256eb1c3017979db1341d583d2cee22d029
+hadoop:3.3.3:1f5762682cef3daff8b2379fe7e40efca107bb7e8dcaa4a513e3bc0c082067759dd05d493ec997433dde2c89ea63dbc93aee0bba60045f89d3ec2d3f687f58b3
+hadoop:3.2.3:46bfbbec3a80dec4d4775e807a981260cac8719964d45663eb8215adcd716b90ef3225d4fe781bcce02ea15e5d2155733bfe0f41f985f2b15297f61abbeb2979
 hadoop:3.1.4:f7eff67e948e21e23d7069dc169c98fcce757f59473e1e9a0e27d69a23df88840a9776089eeae5a8e1e496753f811868fe65638b04e3388c197931cd44d86f63
 hadoop:3.0.3:bef5006616777ac07ece37db067e34499f4862ed93fe2fac5f2968f619a4a0aa5a87e7d2875f55e8f9abe6c3d0e92401fa7cfecfacfc6acbbb425eb91ea5fe3c
 hadoop:2.10.1:2460e02cd1f80dfed7a8981bbc934c095c0a341435118bec781fd835ec2ebdc5543a03d92d24f2ddeebdfe1c2c460065ba1d394ed9a73cbb2020b40a8d8b5e07
@@ -12,7 +12,7 @@
 spark:3.0.1:07fc6df224f303ef53189e6082004400d51cd6c2244d1851d90eabbe58404a69ff980bffe147a5259a34190e1e1c974c72d02470d10a783d2d87f43a8da0850b
 spark:2.4.7:ff75e6db3c4ca5cece2a8a26ad7bd8a2c1c46b4f93e8f2922a31e6a8d98274bedc66bef3e469e862d249c5439355ccca83687a20d536a8400f2c058be553df57
 spark:2.3.2:79d1de6870cf43ecc059d4423540124610ef00abc929c171be42548b505f115906e251e4604ed7d22b6a8cce012a845d90017319c2abb3d5d700369b1c335c6d
-zookeeper:3.7.0:64e2701c019ed46f45f4d53b2c5eaeaf7cf48c342bbafa032a0819d527fc77caebfada6bdad34e5171e6d838f40b16c95b62ce378b53dfc827af2d60cec0b17c
+zookeeper:3.7.1:9103628a50745fa1a289bca666fda4a9c08ec17c55cf13e66887e7ba76e93dbae60a1f1ffd6c10798be3a16069344ecbc00cebb29bf03d9cd7096ccd098ed011
 zookeeper:3.6.3:3f7b1b7d9cf5647d52ad0076c922e108fa956e986b5624667c493cf6d8ff09d3ca88f623c79a799fe49c72e868cb3c9d0f77cb69608de74a183b2cbad10bc827
-zookeeper:3.5.8:9f2c2293a60e02244dff64438704094b2edb167bc45aa82def49eb4a7a3084881057f5d81384926e23a1029f699e6f41bfee5e19fc1664d044ff9c56bcaa6b31
+zookeeper:3.5.10:fbca82d93fb07534d2cd7d93a399463cfea7e772075285d103e7cda5599d14c2d9996c1e50cc66c7c0dc78f996b20e75b20d74df368eb222dbc3caa0ab2cc14b
 zookeeper:3.4.14:b2e03d95f8cf18b97a46e2f53871cef5a5da9d5d80b97009375aed7fb35368c440ca944c7e8b64efabbc065f6fb98bb86239f7c1491f0490efc71876d5a7f424
diff --git a/conf/uno.conf b/conf/uno.conf
index c56669d..2614e91 100644
--- a/conf/uno.conf
+++ b/conf/uno.conf
@@ -3,8 +3,8 @@
 
 # Versions
 # --------
-export HADOOP_VERSION=${HADOOP_VERSION:-3.3.0}
-export ZOOKEEPER_VERSION=${ZOOKEEPER_VERSION:-3.7.0}
+export HADOOP_VERSION=${HADOOP_VERSION:-3.3.3}
+export ZOOKEEPER_VERSION=${ZOOKEEPER_VERSION:-3.7.1}
 export ACCUMULO_VERSION=${ACCUMULO_VERSION:-2.0.1}
 export FLUO_VERSION=${FLUO_VERSION:-1.2.0}
 export FLUO_YARN_VERSION=${FLUO_YARN_VERSION:-1.0.0}