Update the kata-ctl install rule to allow it to be installed to a giv…

…en directory

The Makefile was updated to use an INSTALL_PATH variable to track where the
kata-ctl binary should be installed.  If the user doesn't specify anything,
then it uses the default path that cargo uses.  Otherwise, it will install it
in the directory that the user specified.  The README.md file was also updated
to show how to use the new option.

This work was done by pair programming by the following contributors:
Cesar Tamayo
Kevin Mora Jimenez
Narendra Patel
Ray Karrenbauer
Srinath Duraisamy

Fixes kata-containers#5403

Signed-off-by: Narendra Patel <narendra.g.patel@intel.com>

src/tools/kata-ctl/Makefile

@@ -10,6 +10,7 @@ PROJECT_URL = https://github.com/kata-containers
 PROJECT_COMPONENT = kata-ctl
 
 TARGET = $(PROJECT_COMPONENT)
+INSTALL_PATH = $(HOME)/.cargo
 
 VERSION_FILE := ./VERSION
 export VERSION := $(shell grep -v ^\# $(VERSION_FILE))
@@ -55,7 +56,7 @@ test:
 	@RUSTFLAGS="$(EXTRA_RUSTFLAGS) --deny warnings" cargo test --target $(TRIPLE) $(if $(findstring release,$(BUILD_TYPE)),--release) $(EXTRA_RUSTFEATURES) -- --nocapture
 
 install:
-	@RUSTFLAGS="$(EXTRA_RUSTFLAGS) --deny warnings" cargo install --locked --target $(TRIPLE) --path .
+	@RUSTFLAGS="$(EXTRA_RUSTFLAGS) --deny warnings" cargo install --locked --target $(TRIPLE) --path . --root $(INSTALL_PATH)
 
 check: standard_rust_check
 

src/tools/kata-ctl/README.md

@@ -27,6 +27,11 @@ $ make
 $ make install
 ```
 
+If you would like to install the tool to a specific directory, then you can provide it through the `INSTALL_PATH` variable.
+```bash
+$ make install INSTALL_PATH=<install_path>
+```
+
 ## Run the tool
 
 ```bash