Add hip clang builds to jenkins (#651)

* Make global variables const

* Tidy fixes

* Disable some lints

* Formatting

* Fix tidy const

* Formatting

* Add missing const keywords

* Formatting

* More fixes

* Fix remaining tidy issues

* Formatting

* Fix rocblas function call

* Formatting

* Fix nodiscard warnings

* Formatting

* Use named parameters

* Remove overload

* Add overload

* Remove noncps

* Use named param for node

* Add auto register header

* Use named parameters

* Refactor jenkinsfile

* Fix shadow

* Add missing body variable

* Add more const methods

* Add hip-clang docker builds

* Remove comments

* Add clang-format

* Add more const

* Formatting

* Rename stage

* Disable check

* Add another const

* Add python 2 dev packages

* Add sphinx to dockerfile

test/schedule_test.cpp

@@ -31,7 +31,7 @@ struct unary_op
 
 struct nary_op
 {
-    std::string comment = "";
+    std::string comment;
     template <class Self, class F>
     static auto reflect(Self& self, F f)
     {
@@ -56,7 +56,7 @@ struct nary_op
 
 struct stream_free_op
 {
-    std::string comment = "";
+    std::string comment;
     template <class Self, class F>
     static auto reflect(Self& self, F f)
     {