After deleting BSP dir need to change directory, otherwise chdir from

sal.py causing error that directory doesn't exist, Strange need to find
out reason of the error.

bf_sde.py

@@ -11,7 +11,8 @@
     get_sde_dir_name_in_tar, get_sde_home_absolute, get_sde_pkg_abs_path, \
     get_sde_profile_details, get_sde_profile_name, get_selected_profile_name, \
     read_settings, set_env_var, validate_path_existence, \
-    get_switch_model_from_settings, get_bsp_pkg_abs_path, append_to_env_var
+    get_switch_model_from_settings, get_bsp_pkg_abs_path, append_to_env_var,\
+    dname
 from drivers import load_and_verify_kernel_modules, \
     load_and_verify_kernel_modules_bf2556, load_and_verify_kernel_modules_bf6064
 
@@ -230,6 +231,7 @@ def install_switch_bsp():
     os.system("make")
     os.system("sudo make install")
     shutil.rmtree(os.environ['BSP'])
+    os.chdir(dname)
 
 
 def just_load_sde():

sal.py

@@ -190,8 +190,7 @@ def install_sal_thirdparty_deps():
 def installProtobuf():
     print('Installing protobuf.')
     protobuf_ver = 'v3.6.1'
-    #protobuf_dir= '{0}/protobuf{1}/'.format(sal_thirdparty_path,protobuf_ver)
-    protobuf_dir='{}/protobuf'.format(sal_thirdparty_path)
+    protobuf_dir= '{0}/protobuf{1}/'.format(sal_thirdparty_path,protobuf_ver)
     if os.path.exists(protobuf_dir):
         print('{0} already exists, will rebuild.'.format(protobuf_dir))
     else:
@@ -220,8 +219,7 @@ def installProtobuf():
 def installgRPC():
     print('Installing gRPC.')
     gRPC_ver='v1.17.0'
-    #gRPC_dir='{0}/grpc{1}/'.format(sal_thirdparty_path,gRPC_ver)
-    gRPC_dir='{}/grpc'.format(sal_thirdparty_path)
+    gRPC_dir='{0}/grpc{1}/'.format(sal_thirdparty_path,gRPC_ver)
     if os.path.exists(gRPC_dir):
         print('{0} already exists, will rebuild.'.format(gRPC_dir))
     else: