This pins botocore, boto3 and aws-xray-sdk for moto issue

pinning needed till getmoto/moto#1793 is resolved

setup.py

@@ -9,8 +9,11 @@
 install_requires = [
     "future",
     "troposphere>=1.9.0",
+    # pinning needed till https://github.com/spulec/moto/issues/1793 is
+    # resolved
     "botocore<1.11.0",
     "boto3>=1.7.0,<1.8.0",
+    ##
     "PyYAML>=3.12",
     "awacs>=0.6.0",
     "gitpython~=2.0",
@@ -20,6 +23,10 @@
 ]
 
 tests_require = [
+    # pinning needed till https://github.com/spulec/moto/issues/1793 is
+    # resolved
+    "aws-xray-sdk==1.1.2",
+    ##
     "mock~=2.0.0",
     "moto~=1.1.24",
     "testfixtures~=4.10.0",