Add boto for dynamic inventories

Use `pipenv run pip freeze > requirements.txt` to generate the requirements.txt

pypa/pipenv#3316

Pipfile

@@ -10,6 +10,7 @@ docker-py = "*"
 
 [packages]
 ansible = "~=2.6.7"
+boto = "*"
 
 [requires]
 python_version = "3.6"

requirements.txt

@@ -1,19 +1,19 @@
--i https://pypi.org/simple
+ansible==2.6.16
 ansible-lint==3.4.23
-ansible==2.6.15
 anyconfig==0.9.7
 arrow==0.13.1
 asn1crypto==0.24.0
 atomicwrites==1.3.0
 attrs==19.1.0
 bcrypt==3.1.6
 binaryornot==0.4.4
-cerberus==1.2
+boto==2.49.0
+Cerberus==1.2
 certifi==2019.3.9
 cffi==1.12.2
 chardet==3.0.4
-click-completion==0.3.1
 click==6.7
+click-completion==0.3.1
 colorama==0.3.9
 cookiecutter==1.6.0
 cryptography==2.6.1
@@ -24,31 +24,31 @@ flake8==3.5.0
 future==0.17.1
 git-url-parse==1.2.2
 idna==2.8
+Jinja2==2.10
 jinja2-time==0.2.0
-jinja2==2.10
-markupsafe==1.1.1
+MarkupSafe==1.1.1
 mccabe==0.6.1
 molecule==2.19.0
 monotonic==1.5
-more-itertools==7.0.0 ; python_version > '2.7'
+more-itertools==7.0.0
 paramiko==2.4.2
 pathspec==0.5.9
 pbr==4.1.0
 pexpect==4.6.0
 pluggy==0.9.0
 poyo==0.4.2
-psutil==5.4.6 ; sys_platform != 'win32' and sys_platform != 'cygwin'
+psutil==5.4.6
 ptyprocess==0.6.0
 py==1.8.0
 pyasn1==0.4.5
 pycodestyle==2.3.1
 pycparser==2.19
 pyflakes==1.6.0
-pynacl==1.3.0
+PyNaCl==1.3.0
 pytest==4.4.0
 python-dateutil==2.8.0
 python-gilt==1.2.1
-pyyaml==5.1
+PyYAML==5.1
 requests==2.21.0
 sh==1.12.14
 six==1.12.0