add support for plumed version 2.7.0 and make it default

cmake/Modules/Packages/USER-PLUMED.cmake

@@ -55,8 +55,8 @@ if(DOWNLOAD_PLUMED)
   endif()
   include(ExternalProject)
   ExternalProject_Add(plumed_build
-    URL https://github.com/plumed/plumed2/releases/download/v2.6.1/plumed-src-2.6.1.tgz
-    URL_MD5 89a9a450fc6025299fe16af235957163
+    URL https://github.com/plumed/plumed2/releases/download/v2.7.0/plumed-src-2.7.0.tgz
+    URL_MD5 95f29dd0c067577f11972ff90dfc7d12
     BUILD_IN_SOURCE 1
     CONFIGURE_COMMAND <SOURCE_DIR>/configure --prefix=<INSTALL_DIR>
                                              ${CONFIGURE_REQUEST_PIC}

lib/plumed/Install.py

@@ -17,7 +17,7 @@ parser = ArgumentParser(prog='Install.py',
 
 # settings
 
-version = "2.6.1"
+version = "2.7.0"
 mode = "static"
 
 # help message
@@ -49,6 +49,7 @@ checksums = { \
         '2.5.4' : 'f31b7d16a4be2e30aa7d5c19c3d37853', \
         '2.6.0' : '204d2edae58d9b10ba3ad460cad64191', \
         '2.6.1' : '89a9a450fc6025299fe16af235957163', \
+        '2.7.0' : '95f29dd0c067577f11972ff90dfc7d12', \
         }
 
 # parse and process arguments