Update and quote min_ansible_version.

Author: robertdebock

README.md

@@ -94,7 +94,7 @@ This role has been tested on these [container images](https://hub.docker.com/u/r
 |opensuse|all|
 |ubuntu|all|
 
-The minimum version of Ansible required is 2.9, tests have been done to:
+The minimum version of Ansible required is 2.10, tests have been done to:
 
 - The previous version.
 - The current version.

meta/main.yml

@@ -6,7 +6,7 @@ galaxy_info:
   description: Check diskspace (or inodes) available, fail if too low.
   license: Apache-2.0
   company: none
-  min_ansible_version: 2.9
+  min_ansible_version: "2.10"
 
   platforms:
     - name: Alpine

requirements.txt

@@ -5,6 +5,6 @@
 # https://pip.pypa.io/en/stable/user_guide/#requirements-files
 #
 # Tests run on the previous and current (latest) version of Ansible.
-ansible>=2.9
+ansible>=2.10
 # Some Jinja2 filters are used that are available in the newer releases.
 jinja2>=2.11.2