Add expectedJsonChecker tool

Tool to cross check an expected set of JSON entries against an input set
of JSON entries. Optionally, the applying of filters to entries within
the expected set using logical operations is allowed against another set
of entries within a JSON file.

Traversing/cross-checking JSON dictionary objects are supported, lists
are not supported yet.

Change-Id: I9537fd8d94316b90e301a8f671ed9d1c3ab2dc0e
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/msbarth/LICENSE b/msbarth/LICENSE
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+Copyright 2019 IBM Corporation
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+