update botocore version

[tstrych]

botocore requires update

update reasoning is explained in this robottelo issue.

My steps:
I found boto and boto3 is dependant, boto version is not specified in setup.cfg but boto3 is so I looked at boto3 versions and found 1.12.0, random release that was after 1.14.0.
Then I let pip to installed boto3
pip install boto3 == 1.12.0 and botocore >= 1.14.0 and pip installed botocore 1.15.49

[tstrych]

wrapanapi/systems/ec2.py:8:from botocore.config import Config
wrapanapi/systems/ec2.py:9:from botocore.exceptions import ClientError

we use only those from botocore, and there were no important change in ClientError and Config between those versions
only change in ClientError

only change in Config

and for boto3:

from boto3 import resource
from boto3 import client
boto3.__version__ - ( I hope this is just a property and is set up automatically, so I didn't check that) 

i didn't found any files in comparism that metions resources or client. I found documentation

I found those files in this directory and both of them (client, resource) are without change for multiple years.