Update LAMMPS package (#17715)

* LAMMPS: Use LATTE 1.2.2 starting with version 20200602.

Version 20200602 and upper requires Latte 1.2.2. This caused the internal Latte distribution to be used instead of the Latte install provided by Spack.

* LAMMPS: Add new versions 20200630 and 20200721.

var/spack/repos/builtin/packages/lammps/package.py

@@ -21,6 +21,8 @@ class Lammps(CMakePackage, CudaPackage):
     tags = ['ecp', 'ecp-apps']
 
     version('master', branch='master')
+    version('20200721', sha256='845bfeddb7b667799a1a5dbc166b397d714c3d2720316604a979d3465b4190a9')
+    version('20200630', sha256='413cbfabcc1541a339c7a4ab5693fbeb768f46bb1250640ba94686c6e90922fc')
     version('20200505', sha256='c49d77fd602d28ebd8cf10f7359b9fc4d14668c72039028ed7792453d416de73')
     version('20200303', sha256='9aa56dfb8673a06e6c88588505ec1dfc01dd94f9d60e719ed0c605e48cc06c58')
     version('20200227', sha256='1aabcf38bc72285797c710b648e906151a912c36b634a9c88ac383aacf85516e')
@@ -92,11 +94,12 @@ def url_for_version(self, version):
     depends_on('netcdf-c+mpi', when='+user-netcdf')
     depends_on('blas', when='+user-atc')
     depends_on('lapack', when='+user-atc')
-    depends_on('latte@1.0.1', when='@:20180222+latte')
-    depends_on('latte@1.1.1:', when='@20180316:20180628+latte')
     depends_on('opencl', when='+opencl')
 
-    depends_on('latte@1.2.1:', when='@20180629:+latte')
+    depends_on('latte@1.0.1', when='@:20180222+latte')
+    depends_on('latte@1.1.1:', when='@20180316:20180628+latte')
+    depends_on('latte@1.2.1:', when='@20180629:20200505+latte')
+    depends_on('latte@1.2.2:', when='@20200602:+latte')
     depends_on('blas', when='+latte')
     depends_on('lapack', when='+latte')
     depends_on('python', when='+python')