Add patch to list of build dependencies

This commit adds the patch package to the list of python build
dependencies for pyenv. This is not always necessary, but some python
versions (for example 3.7.12) require a patch to be applied before
installing and the process fails if the patch package is not installed.

Change-Id: I605fc1c9255e98692a6a901cfc509b7fdb873ae1

roles/ensure-python/vars/Debian.yaml

@@ -8,3 +8,4 @@ python_build_depends:
   - libsqlite3-dev
   - make
   - zlib1g-dev
+  - patch

roles/ensure-python/vars/Gentoo.yaml

@@ -1,2 +1,3 @@
 python_build_depends:
   - virtual/libffi
+  - patch

roles/ensure-python/vars/RedHat.yaml

@@ -7,3 +7,4 @@ python_build_depends:
   - readline-devel
   - sqlite-devel
   - zlib-devel
+  - patch

roles/ensure-python/vars/Suse.yaml

@@ -9,3 +9,4 @@ python_build_depends:
   - sqlite3-devel
   - tar
   - zlib-devel
+  - patch