Bump the release version for v0.2.0rc2 (#2147)

Author: brightcoder01

setup.py

@@ -24,7 +24,7 @@
 
 setup(
     name="elasticdl",
-    version="develop",
+    version="0.2.0rc2",
     description="A Kubernetes-native Deep Learning Framework",
     long_description="ElasticDL is a Kubernetes-native deep learning framework"
     " built on top of TensorFlow 2.0 that supports"

setup_client.py

@@ -18,7 +18,7 @@
 
 setup(
     name="elasticdl_client",
-    version="develop",
+    version="0.2.0rc2",
     description="The client command line tool for ElasticDL.",
     long_description="ElasticDL Client is the client command line tool for"
     " ElasticDL. Users can use it to submit distributed ElasticDL jobs to"

setup_preprocessing.py

@@ -22,7 +22,7 @@
 
 setup(
     name="elasticdl_preprocessing",
-    version="develop",
+    version="0.2.0rc2",
     description="A feature preprocessing library.",
     long_description="This is an extension of the native Keras Preprocessing"
     " Layers and Feature Column API from TensorFlow. We can develop our model"